Home / 1,440,400,755.81-1,987,755,060.02-780,351,033.81

Finding the Fourth Proportional to 1,440,400,755.81, 1,987,755,060.02 and 780,351,033.81

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Solution

The fourth proportional to 1,440,400,755.81, 1,987,755,060.02 and 780,351,033.81 is: 1,076,885,519.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,400,755.81 : 1,987,755,060.02 = 780,351,033.81 : x
  2. Step 2: Convert to fraction form
    1,440,400,755.81/1,987,755,060.02 = 780,351,033.81/x
  3. Step 3: Cross multiply
    1,440,400,755.81x = 1,987,755,060.02 × 780,351,033.81
  4. Step 4: Simplify right side
    1,440,400,755.81x = 1,551,146,716,047,665,408
  5. Step 5: Solve for x
    x = 1,551,146,716,047,665,408/1,440,400,755.81
  6. Step 6: Final answer
    x = 1,076,885,519.39

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Double scale
Find fourth proportional to 1,440,400,756.81, 1,987,755,061.40 and 780,351,034.81
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.