Home / 530,816.38-732,515.66-289,103.20

Finding the Fourth Proportional to 530,816.38, 732,515.66 and 289,103.20

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Solution

The fourth proportional to 530,816.38, 732,515.66 and 289,103.20 is: 398,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,816.38 : 732,515.66 = 289,103.20 : x
  2. Step 2: Convert to fraction form
    530,816.38/732,515.66 = 289,103.20/x
  3. Step 3: Cross multiply
    530,816.38x = 732,515.66 × 289,103.20
  4. Step 4: Simplify right side
    530,816.38x = 211,772,617,693.53
  5. Step 5: Solve for x
    x = 211,772,617,693.53/530,816.38
  6. Step 6: Final answer
    x = 398,956.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.