Home / 521,881,673.77-720,154,114.50-307,266,443.02

Finding the Fourth Proportional to 521,881,673.77, 720,154,114.50 and 307,266,443.02

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Solution

The fourth proportional to 521,881,673.77, 720,154,114.50 and 307,266,443.02 is: 424,002,612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,881,673.77 : 720,154,114.50 = 307,266,443.02 : x
  2. Step 2: Convert to fraction form
    521,881,673.77/720,154,114.50 = 307,266,443.02/x
  3. Step 3: Cross multiply
    521,881,673.77x = 720,154,114.50 × 307,266,443.02
  4. Step 4: Simplify right side
    521,881,673.77x = 221,279,193,188,632,800
  5. Step 5: Solve for x
    x = 221,279,193,188,632,800/521,881,673.77
  6. Step 6: Final answer
    x = 424,002,612.68

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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.