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Finding the Fourth Proportional to 579,815.10, 869,722.65 and 496,871.10

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Solution

The fourth proportional to 579,815.10, 869,722.65 and 496,871.10 is: 745,306.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,815.10 : 869,722.65 = 496,871.10 : x
  2. Step 2: Convert to fraction form
    579,815.10/869,722.65 = 496,871.10/x
  3. Step 3: Cross multiply
    579,815.10x = 869,722.65 × 496,871.10
  4. Step 4: Simplify right side
    579,815.10x = 432,140,049,800.42
  5. Step 5: Solve for x
    x = 432,140,049,800.42/579,815.10
  6. Step 6: Final answer
    x = 745,306.65

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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.