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Finding the Fourth Proportional to 583,417.20, 875,125.80 and 490,105.20

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Solution

The fourth proportional to 583,417.20, 875,125.80 and 490,105.20 is: 735,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,417.20 : 875,125.80 = 490,105.20 : x
  2. Step 2: Convert to fraction form
    583,417.20/875,125.80 = 490,105.20/x
  3. Step 3: Cross multiply
    583,417.20x = 875,125.80 × 490,105.20
  4. Step 4: Simplify right side
    583,417.20x = 428,903,705,234.16
  5. Step 5: Solve for x
    x = 428,903,705,234.16/583,417.20
  6. Step 6: Final answer
    x = 735,157.80

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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.