Home / 918,342.41-1,377,544.38-319,308.76

Finding the Fourth Proportional to 918,342.41, 1,377,544.38 and 319,308.76

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Solution

The fourth proportional to 918,342.41, 1,377,544.38 and 319,308.76 is: 478,973.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,342.41 : 1,377,544.38 = 319,308.76 : x
  2. Step 2: Convert to fraction form
    918,342.41/1,377,544.38 = 319,308.76/x
  3. Step 3: Cross multiply
    918,342.41x = 1,377,544.38 × 319,308.76
  4. Step 4: Simplify right side
    918,342.41x = 439,861,984,378.91
  5. Step 5: Solve for x
    x = 439,861,984,378.91/918,342.41
  6. Step 6: Final answer
    x = 478,973.83

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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.