Home / 579,626.10-869,439.15-205,686.90

Finding the Fourth Proportional to 579,626.10, 869,439.15 and 205,686.90

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Solution

The fourth proportional to 579,626.10, 869,439.15 and 205,686.90 is: 308,530.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,626.10 : 869,439.15 = 205,686.90 : x
  2. Step 2: Convert to fraction form
    579,626.10/869,439.15 = 205,686.90/x
  3. Step 3: Cross multiply
    579,626.10x = 869,439.15 × 205,686.90
  4. Step 4: Simplify right side
    579,626.10x = 178,832,243,502.14
  5. Step 5: Solve for x
    x = 178,832,243,502.14/579,626.10
  6. Step 6: Final answer
    x = 308,530.35

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Half scale
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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.