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Finding the Fourth Proportional to 689,657.76, 951,585 and 403,122.42

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Solution

The fourth proportional to 689,657.76, 951,585 and 403,122.42 is: 556,225.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,657.76 : 951,585 = 403,122.42 : x
  2. Step 2: Convert to fraction form
    689,657.76/951,585 = 403,122.42/x
  3. Step 3: Cross multiply
    689,657.76x = 951,585 × 403,122.42
  4. Step 4: Simplify right side
    689,657.76x = 383,605,248,035.70
  5. Step 5: Solve for x
    x = 383,605,248,035.70/689,657.76
  6. Step 6: Final answer
    x = 556,225.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.