Home / 659,622.10-989,433.15-260,130.10

Finding the Fourth Proportional to 659,622.10, 989,433.15 and 260,130.10

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Solution

The fourth proportional to 659,622.10, 989,433.15 and 260,130.10 is: 390,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,622.10 : 989,433.15 = 260,130.10 : x
  2. Step 2: Convert to fraction form
    659,622.10/989,433.15 = 260,130.10/x
  3. Step 3: Cross multiply
    659,622.10x = 989,433.15 × 260,130.10
  4. Step 4: Simplify right side
    659,622.10x = 257,381,344,252.82
  5. Step 5: Solve for x
    x = 257,381,344,252.82/659,622.10
  6. Step 6: Final answer
    x = 390,195.15

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Double scale
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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.