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Finding the Fourth Proportional to 539,956.86, 745,148.34 and 313,602.36

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Solution

The fourth proportional to 539,956.86, 745,148.34 and 313,602.36 is: 432,775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,956.86 : 745,148.34 = 313,602.36 : x
  2. Step 2: Convert to fraction form
    539,956.86/745,148.34 = 313,602.36/x
  3. Step 3: Cross multiply
    539,956.86x = 745,148.34 × 313,602.36
  4. Step 4: Simplify right side
    539,956.86x = 233,680,277,974.08
  5. Step 5: Solve for x
    x = 233,680,277,974.08/539,956.86
  6. Step 6: Final answer
    x = 432,775.83

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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.