Home / 841,521.39-1,161,143.19-478,923.69

Finding the Fourth Proportional to 841,521.39, 1,161,143.19 and 478,923.69

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Solution

The fourth proportional to 841,521.39, 1,161,143.19 and 478,923.69 is: 660,825.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,521.39 : 1,161,143.19 = 478,923.69 : x
  2. Step 2: Convert to fraction form
    841,521.39/1,161,143.19 = 478,923.69/x
  3. Step 3: Cross multiply
    841,521.39x = 1,161,143.19 × 478,923.69
  4. Step 4: Simplify right side
    841,521.39x = 556,098,981,173.17
  5. Step 5: Solve for x
    x = 556,098,981,173.17/841,521.39
  6. Step 6: Final answer
    x = 660,825.72

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Half scale
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Double scale
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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.