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Finding the Fourth Proportional to 804,580.80, 1,205,488.80 and 424,939.20

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Solution

The fourth proportional to 804,580.80, 1,205,488.80 and 424,939.20 is: 636,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,580.80 : 1,205,488.80 = 424,939.20 : x
  2. Step 2: Convert to fraction form
    804,580.80/1,205,488.80 = 424,939.20/x
  3. Step 3: Cross multiply
    804,580.80x = 1,205,488.80 × 424,939.20
  4. Step 4: Simplify right side
    804,580.80x = 512,259,446,280.96
  5. Step 5: Solve for x
    x = 512,259,446,280.96/804,580.80
  6. Step 6: Final answer
    x = 636,678.69

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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.