Home / 693,149.80-1,039,724.70-478,532.20

Finding the Fourth Proportional to 693,149.80, 1,039,724.70 and 478,532.20

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Solution

The fourth proportional to 693,149.80, 1,039,724.70 and 478,532.20 is: 717,798.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,149.80 : 1,039,724.70 = 478,532.20 : x
  2. Step 2: Convert to fraction form
    693,149.80/1,039,724.70 = 478,532.20/x
  3. Step 3: Cross multiply
    693,149.80x = 1,039,724.70 × 478,532.20
  4. Step 4: Simplify right side
    693,149.80x = 497,541,748,085.34
  5. Step 5: Solve for x
    x = 497,541,748,085.34/693,149.80
  6. Step 6: Final answer
    x = 717,798.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.