Home / 638,981.04-958,307.38-189,595.60

Finding the Fourth Proportional to 638,981.04, 958,307.38 and 189,595.60

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Solution

The fourth proportional to 638,981.04, 958,307.38 and 189,595.60 is: 284,344.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,981.04 : 958,307.38 = 189,595.60 : x
  2. Step 2: Convert to fraction form
    638,981.04/958,307.38 = 189,595.60/x
  3. Step 3: Cross multiply
    638,981.04x = 958,307.38 × 189,595.60
  4. Step 4: Simplify right side
    638,981.04x = 181,690,862,695.53
  5. Step 5: Solve for x
    x = 181,690,862,695.53/638,981.04
  6. Step 6: Final answer
    x = 284,344.69

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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.