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Finding the Fourth Proportional to 586,983.20, 880,474.80 and 212,957.60

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Solution

The fourth proportional to 586,983.20, 880,474.80 and 212,957.60 is: 319,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,983.20 : 880,474.80 = 212,957.60 : x
  2. Step 2: Convert to fraction form
    586,983.20/880,474.80 = 212,957.60/x
  3. Step 3: Cross multiply
    586,983.20x = 880,474.80 × 212,957.60
  4. Step 4: Simplify right side
    586,983.20x = 187,503,800,268.48
  5. Step 5: Solve for x
    x = 187,503,800,268.48/586,983.20
  6. Step 6: Final answer
    x = 319,436.40

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Similar ratio
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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.