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Finding the Fourth Proportional to 659,986,000.60, 989,979,000.90 and 223,300,930.90

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Solution

The fourth proportional to 659,986,000.60, 989,979,000.90 and 223,300,930.90 is: 334,951,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,986,000.60 : 989,979,000.90 = 223,300,930.90 : x
  2. Step 2: Convert to fraction form
    659,986,000.60/989,979,000.90 = 223,300,930.90/x
  3. Step 3: Cross multiply
    659,986,000.60x = 989,979,000.90 × 223,300,930.90
  4. Step 4: Simplify right side
    659,986,000.60x = 221,063,232,472,421,952
  5. Step 5: Solve for x
    x = 221,063,232,472,421,952/659,986,000.60
  6. Step 6: Final answer
    x = 334,951,396.35

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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.