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Finding the Fourth Proportional to 583,411.20, 875,116.80 and 490,099.20

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Solution

The fourth proportional to 583,411.20, 875,116.80 and 490,099.20 is: 735,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,411.20 : 875,116.80 = 490,099.20 : x
  2. Step 2: Convert to fraction form
    583,411.20/875,116.80 = 490,099.20/x
  3. Step 3: Cross multiply
    583,411.20x = 875,116.80 × 490,099.20
  4. Step 4: Simplify right side
    583,411.20x = 428,894,043,586.56
  5. Step 5: Solve for x
    x = 428,894,043,586.56/583,411.20
  6. Step 6: Final answer
    x = 735,148.80

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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.