Home / 938,000.20-1,407,000.30-440,336.20

Finding the Fourth Proportional to 938,000.20, 1,407,000.30 and 440,336.20

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Solution

The fourth proportional to 938,000.20, 1,407,000.30 and 440,336.20 is: 660,504.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,000.20 : 1,407,000.30 = 440,336.20 : x
  2. Step 2: Convert to fraction form
    938,000.20/1,407,000.30 = 440,336.20/x
  3. Step 3: Cross multiply
    938,000.20x = 1,407,000.30 × 440,336.20
  4. Step 4: Simplify right side
    938,000.20x = 619,553,165,500.86
  5. Step 5: Solve for x
    x = 619,553,165,500.86/938,000.20
  6. Step 6: Final answer
    x = 660,504.30

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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.