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Finding the Fourth Proportional to 832,152.80, 1,248,229.20 and 779,664.80

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Solution

The fourth proportional to 832,152.80, 1,248,229.20 and 779,664.80 is: 1,169,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    832,152.80 : 1,248,229.20 = 779,664.80 : x
  2. Step 2: Convert to fraction form
    832,152.80/1,248,229.20 = 779,664.80/x
  3. Step 3: Cross multiply
    832,152.80x = 1,248,229.20 × 779,664.80
  4. Step 4: Simplify right side
    832,152.80x = 973,200,369,572.16
  5. Step 5: Solve for x
    x = 973,200,369,572.16/832,152.80
  6. Step 6: Final answer
    x = 1,169,497.20

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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.