Home / 985,714.80-1,478,572.20-424,749.30

Finding the Fourth Proportional to 985,714.80, 1,478,572.20 and 424,749.30

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Solution

The fourth proportional to 985,714.80, 1,478,572.20 and 424,749.30 is: 637,123.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,714.80 : 1,478,572.20 = 424,749.30 : x
  2. Step 2: Convert to fraction form
    985,714.80/1,478,572.20 = 424,749.30/x
  3. Step 3: Cross multiply
    985,714.80x = 1,478,572.20 × 424,749.30
  4. Step 4: Simplify right side
    985,714.80x = 628,022,506,949.46
  5. Step 5: Solve for x
    x = 628,022,506,949.46/985,714.80
  6. Step 6: Final answer
    x = 637,123.95

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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.