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Finding the Fourth Proportional to 646,129.91, 891,594.88 and 374,285.14

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Solution

The fourth proportional to 646,129.91, 891,594.88 and 374,285.14 is: 516,476.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,129.91 : 891,594.88 = 374,285.14 : x
  2. Step 2: Convert to fraction form
    646,129.91/891,594.88 = 374,285.14/x
  3. Step 3: Cross multiply
    646,129.91x = 891,594.88 × 374,285.14
  4. Step 4: Simplify right side
    646,129.91x = 333,710,711,319.38
  5. Step 5: Solve for x
    x = 333,710,711,319.38/646,129.91
  6. Step 6: Final answer
    x = 516,476.18

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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.