Home / 812,511.68-1,121,248.32-472,972.80

Finding the Fourth Proportional to 812,511.68, 1,121,248.32 and 472,972.80

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Solution

The fourth proportional to 812,511.68, 1,121,248.32 and 472,972.80 is: 652,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,511.68 : 1,121,248.32 = 472,972.80 : x
  2. Step 2: Convert to fraction form
    812,511.68/1,121,248.32 = 472,972.80/x
  3. Step 3: Cross multiply
    812,511.68x = 1,121,248.32 × 472,972.80
  4. Step 4: Simplify right side
    812,511.68x = 530,319,957,405.70
  5. Step 5: Solve for x
    x = 530,319,957,405.70/812,511.68
  6. Step 6: Final answer
    x = 652,692.10

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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.