Home / 745,147.86-1,117,801.38-318,727.80

Finding the Fourth Proportional to 745,147.86, 1,117,801.38 and 318,727.80

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Solution

The fourth proportional to 745,147.86, 1,117,801.38 and 318,727.80 is: 478,125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,147.86 : 1,117,801.38 = 318,727.80 : x
  2. Step 2: Convert to fraction form
    745,147.86/1,117,801.38 = 318,727.80/x
  3. Step 3: Cross multiply
    745,147.86x = 1,117,801.38 × 318,727.80
  4. Step 4: Simplify right side
    745,147.86x = 356,274,374,684.36
  5. Step 5: Solve for x
    x = 356,274,374,684.36/745,147.86
  6. Step 6: Final answer
    x = 478,125.74

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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.