Home / 741,780.40-1,023,657.51-402,248.56

Finding the Fourth Proportional to 741,780.40, 1,023,657.51 and 402,248.56

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Solution

The fourth proportional to 741,780.40, 1,023,657.51 and 402,248.56 is: 555,103.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,780.40 : 1,023,657.51 = 402,248.56 : x
  2. Step 2: Convert to fraction form
    741,780.40/1,023,657.51 = 402,248.56/x
  3. Step 3: Cross multiply
    741,780.40x = 1,023,657.51 × 402,248.56
  4. Step 4: Simplify right side
    741,780.40x = 411,764,759,330.69
  5. Step 5: Solve for x
    x = 411,764,759,330.69/741,780.40
  6. Step 6: Final answer
    x = 555,103.32

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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.