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Finding the Fourth Proportional to 486,810.28, 670,841.22 and 372,218.76

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Solution

The fourth proportional to 486,810.28, 670,841.22 and 372,218.76 is: 512,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,810.28 : 670,841.22 = 372,218.76 : x
  2. Step 2: Convert to fraction form
    486,810.28/670,841.22 = 372,218.76/x
  3. Step 3: Cross multiply
    486,810.28x = 670,841.22 × 372,218.76
  4. Step 4: Simplify right side
    486,810.28x = 249,699,687,065.29
  5. Step 5: Solve for x
    x = 249,699,687,065.29/486,810.28
  6. Step 6: Final answer
    x = 512,930.19

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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.