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Finding the Fourth Proportional to 659,870.30, 989,837.85 and 344,942.30

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Solution

The fourth proportional to 659,870.30, 989,837.85 and 344,942.30 is: 517,430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,870.30 : 989,837.85 = 344,942.30 : x
  2. Step 2: Convert to fraction form
    659,870.30/989,837.85 = 344,942.30/x
  3. Step 3: Cross multiply
    659,870.30x = 989,837.85 × 344,942.30
  4. Step 4: Simplify right side
    659,870.30x = 341,436,944,606.06
  5. Step 5: Solve for x
    x = 341,436,944,606.06/659,870.30
  6. Step 6: Final answer
    x = 517,430.39

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Double scale
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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.