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Finding the Fourth Proportional to 717,454.83, 990,050.30 and 445,516.90

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Solution

The fourth proportional to 717,454.83, 990,050.30 and 445,516.90 is: 614,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,454.83 : 990,050.30 = 445,516.90 : x
  2. Step 2: Convert to fraction form
    717,454.83/990,050.30 = 445,516.90/x
  3. Step 3: Cross multiply
    717,454.83x = 990,050.30 × 445,516.90
  4. Step 4: Simplify right side
    717,454.83x = 441,084,133,322.23
  5. Step 5: Solve for x
    x = 441,084,133,322.23/717,454.83
  6. Step 6: Final answer
    x = 614,790.11

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Double scale
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Similar ratio
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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.