Home / 1,380,443,359.77-1,905,058,846.53-816,411,740.45

Finding the Fourth Proportional to 1,380,443,359.77, 1,905,058,846.53 and 816,411,740.45

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Solution

The fourth proportional to 1,380,443,359.77, 1,905,058,846.53 and 816,411,740.45 is: 1,126,676,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,443,359.77 : 1,905,058,846.53 = 816,411,740.45 : x
  2. Step 2: Convert to fraction form
    1,380,443,359.77/1,905,058,846.53 = 816,411,740.45/x
  3. Step 3: Cross multiply
    1,380,443,359.77x = 1,905,058,846.53 × 816,411,740.45
  4. Step 4: Simplify right side
    1,380,443,359.77x = 1,555,312,408,545,701,632
  5. Step 5: Solve for x
    x = 1,555,312,408,545,701,632/1,380,443,359.77
  6. Step 6: Final answer
    x = 1,126,676,004.15

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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.