Home / 781,629,105.20-1,078,666,905.53-424,411,937.87

Finding the Fourth Proportional to 781,629,105.20, 1,078,666,905.53 and 424,411,937.87

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Solution

The fourth proportional to 781,629,105.20, 1,078,666,905.53 and 424,411,937.87 is: 585,698,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,629,105.20 : 1,078,666,905.53 = 424,411,937.87 : x
  2. Step 2: Convert to fraction form
    781,629,105.20/1,078,666,905.53 = 424,411,937.87/x
  3. Step 3: Cross multiply
    781,629,105.20x = 1,078,666,905.53 × 424,411,937.87
  4. Step 4: Simplify right side
    781,629,105.20x = 457,799,111,692,798,144
  5. Step 5: Solve for x
    x = 457,799,111,692,798,144/781,629,105.20
  6. Step 6: Final answer
    x = 585,698,649.97

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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.