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Finding the Fourth Proportional to 552,122.68, 761,922 and 307,105.78

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Solution

The fourth proportional to 552,122.68, 761,922 and 307,105.78 is: 423,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,122.68 : 761,922 = 307,105.78 : x
  2. Step 2: Convert to fraction form
    552,122.68/761,922 = 307,105.78/x
  3. Step 3: Cross multiply
    552,122.68x = 761,922 × 307,105.78
  4. Step 4: Simplify right side
    552,122.68x = 233,990,650,109.16
  5. Step 5: Solve for x
    x = 233,990,650,109.16/552,122.68
  6. Step 6: Final answer
    x = 423,801.92

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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.