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Finding the Fourth Proportional to 987,304.80, 1,480,798.80 and 355,893.60

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Solution

The fourth proportional to 987,304.80, 1,480,798.80 and 355,893.60 is: 533,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,304.80 : 1,480,798.80 = 355,893.60 : x
  2. Step 2: Convert to fraction form
    987,304.80/1,480,798.80 = 355,893.60/x
  3. Step 3: Cross multiply
    987,304.80x = 1,480,798.80 × 355,893.60
  4. Step 4: Simplify right side
    987,304.80x = 527,006,815,807.68
  5. Step 5: Solve for x
    x = 527,006,815,807.68/987,304.80
  6. Step 6: Final answer
    x = 533,783.30

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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.