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Finding the Fourth Proportional to 539,610.72, 744,547.20 and 313,134.72

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Solution

The fourth proportional to 539,610.72, 744,547.20 and 313,134.72 is: 432,058.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,610.72 : 744,547.20 = 313,134.72 : x
  2. Step 2: Convert to fraction form
    539,610.72/744,547.20 = 313,134.72/x
  3. Step 3: Cross multiply
    539,610.72x = 744,547.20 × 313,134.72
  4. Step 4: Simplify right side
    539,610.72x = 233,143,578,998.78
  5. Step 5: Solve for x
    x = 233,143,578,998.78/539,610.72
  6. Step 6: Final answer
    x = 432,058.83

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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.