Home / 558,869.32-769,531.76-421,248.20

Finding the Fourth Proportional to 558,869.32, 769,531.76 and 421,248.20

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Solution

The fourth proportional to 558,869.32, 769,531.76 and 421,248.20 is: 580,035.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,869.32 : 769,531.76 = 421,248.20 : x
  2. Step 2: Convert to fraction form
    558,869.32/769,531.76 = 421,248.20/x
  3. Step 3: Cross multiply
    558,869.32x = 769,531.76 × 421,248.20
  4. Step 4: Simplify right side
    558,869.32x = 324,163,868,742.83
  5. Step 5: Solve for x
    x = 324,163,868,742.83/558,869.32
  6. Step 6: Final answer
    x = 580,035.18

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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.