Home / 1,121,240.70-1,681,802.28-322,490.90

Finding the Fourth Proportional to 1,121,240.70, 1,681,802.28 and 322,490.90

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Solution

The fourth proportional to 1,121,240.70, 1,681,802.28 and 322,490.90 is: 483,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,240.70 : 1,681,802.28 = 322,490.90 : x
  2. Step 2: Convert to fraction form
    1,121,240.70/1,681,802.28 = 322,490.90/x
  3. Step 3: Cross multiply
    1,121,240.70x = 1,681,802.28 × 322,490.90
  4. Step 4: Simplify right side
    1,121,240.70x = 542,365,935,103.76
  5. Step 5: Solve for x
    x = 542,365,935,103.76/1,121,240.70
  6. Step 6: Final answer
    x = 483,719.45

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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.