Home / 1,440,400,752.81-1,987,755,055.88-780,351,030.81

Finding the Fourth Proportional to 1,440,400,752.81, 1,987,755,055.88 and 780,351,030.81

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Solution

The fourth proportional to 1,440,400,752.81, 1,987,755,055.88 and 780,351,030.81 is: 1,076,885,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,400,752.81 : 1,987,755,055.88 = 780,351,030.81 : x
  2. Step 2: Convert to fraction form
    1,440,400,752.81/1,987,755,055.88 = 780,351,030.81/x
  3. Step 3: Cross multiply
    1,440,400,752.81x = 1,987,755,055.88 × 780,351,030.81
  4. Step 4: Simplify right side
    1,440,400,752.81x = 1,551,146,706,849,845,248
  5. Step 5: Solve for x
    x = 1,551,146,706,849,845,248/1,440,400,752.81
  6. Step 6: Final answer
    x = 1,076,885,515.25

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Double scale
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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.