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Finding the Fourth Proportional to 866,000.80, 1,299,030.90 and 266,957.20

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Solution

The fourth proportional to 866,000.80, 1,299,030.90 and 266,957.20 is: 400,444.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,000.80 : 1,299,030.90 = 266,957.20 : x
  2. Step 2: Convert to fraction form
    866,000.80/1,299,030.90 = 266,957.20/x
  3. Step 3: Cross multiply
    866,000.80x = 1,299,030.90 × 266,957.20
  4. Step 4: Simplify right side
    866,000.80x = 346,785,651,777.48
  5. Step 5: Solve for x
    x = 346,785,651,777.48/866,000.80
  6. Step 6: Final answer
    x = 400,444.96

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1.5x scale

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.