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Finding the Fourth Proportional to 659,815.80, 989,723.70 and 565,337.40

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Solution

The fourth proportional to 659,815.80, 989,723.70 and 565,337.40 is: 848,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,815.80 : 989,723.70 = 565,337.40 : x
  2. Step 2: Convert to fraction form
    659,815.80/989,723.70 = 565,337.40/x
  3. Step 3: Cross multiply
    659,815.80x = 989,723.70 × 565,337.40
  4. Step 4: Simplify right side
    659,815.80x = 559,527,823,276.38
  5. Step 5: Solve for x
    x = 559,527,823,276.38/659,815.80
  6. Step 6: Final answer
    x = 848,006.10

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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.