Home / 676,637.44-933,859.12-390,101.52

Finding the Fourth Proportional to 676,637.44, 933,859.12 and 390,101.52

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Solution

The fourth proportional to 676,637.44, 933,859.12 and 390,101.52 is: 538,397.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,637.44 : 933,859.12 = 390,101.52 : x
  2. Step 2: Convert to fraction form
    676,637.44/933,859.12 = 390,101.52/x
  3. Step 3: Cross multiply
    676,637.44x = 933,859.12 × 390,101.52
  4. Step 4: Simplify right side
    676,637.44x = 364,299,862,177.86
  5. Step 5: Solve for x
    x = 364,299,862,177.86/676,637.44
  6. Step 6: Final answer
    x = 538,397.44

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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.