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Finding the Fourth Proportional to 811,449.87, 1,119,703.21 and 467,397.71

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Solution

The fourth proportional to 811,449.87, 1,119,703.21 and 467,397.71 is: 644,952.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,449.87 : 1,119,703.21 = 467,397.71 : x
  2. Step 2: Convert to fraction form
    811,449.87/1,119,703.21 = 467,397.71/x
  3. Step 3: Cross multiply
    811,449.87x = 1,119,703.21 × 467,397.71
  4. Step 4: Simplify right side
    811,449.87x = 523,346,716,294.64
  5. Step 5: Solve for x
    x = 523,346,716,294.64/811,449.87
  6. Step 6: Final answer
    x = 644,952.62

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Double scale
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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.