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Finding the Fourth Proportional to 696,670.86, 961,312.73 and 386,568.30

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Solution

The fourth proportional to 696,670.86, 961,312.73 and 386,568.30 is: 533,412.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,670.86 : 961,312.73 = 386,568.30 : x
  2. Step 2: Convert to fraction form
    696,670.86/961,312.73 = 386,568.30/x
  3. Step 3: Cross multiply
    696,670.86x = 961,312.73 × 386,568.30
  4. Step 4: Simplify right side
    696,670.86x = 371,613,027,804.46
  5. Step 5: Solve for x
    x = 371,613,027,804.46/696,670.86
  6. Step 6: Final answer
    x = 533,412.62

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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.