Home / 692,227.20-955,272.60-390,421.20

Finding the Fourth Proportional to 692,227.20, 955,272.60 and 390,421.20

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Solution

The fourth proportional to 692,227.20, 955,272.60 and 390,421.20 is: 538,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,227.20 : 955,272.60 = 390,421.20 : x
  2. Step 2: Convert to fraction form
    692,227.20/955,272.60 = 390,421.20/x
  3. Step 3: Cross multiply
    692,227.20x = 955,272.60 × 390,421.20
  4. Step 4: Simplify right side
    692,227.20x = 372,958,674,819.12
  5. Step 5: Solve for x
    x = 372,958,674,819.12/692,227.20
  6. Step 6: Final answer
    x = 538,780.73

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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.