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Finding the Fourth Proportional to 987,205.60, 1,480,808.40 and 277,256.80

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Solution

The fourth proportional to 987,205.60, 1,480,808.40 and 277,256.80 is: 415,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,205.60 : 1,480,808.40 = 277,256.80 : x
  2. Step 2: Convert to fraction form
    987,205.60/1,480,808.40 = 277,256.80/x
  3. Step 3: Cross multiply
    987,205.60x = 1,480,808.40 × 277,256.80
  4. Step 4: Simplify right side
    987,205.60x = 410,564,198,397.12
  5. Step 5: Solve for x
    x = 410,564,198,397.12/987,205.60
  6. Step 6: Final answer
    x = 415,885.20

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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.