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Finding the Fourth Proportional to 988,807.80, 1,482,920.10 and 389,569.80

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Solution

The fourth proportional to 988,807.80, 1,482,920.10 and 389,569.80 is: 584,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,807.80 : 1,482,920.10 = 389,569.80 : x
  2. Step 2: Convert to fraction form
    988,807.80/1,482,920.10 = 389,569.80/x
  3. Step 3: Cross multiply
    988,807.80x = 1,482,920.10 × 389,569.80
  4. Step 4: Simplify right side
    988,807.80x = 577,700,886,772.98
  5. Step 5: Solve for x
    x = 577,700,886,772.98/988,807.80
  6. Step 6: Final answer
    x = 584,239.82

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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.