Home / 708,672.10-977,971.92-386,387.56

Finding the Fourth Proportional to 708,672.10, 977,971.92 and 386,387.56

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Solution

The fourth proportional to 708,672.10, 977,971.92 and 386,387.56 is: 533,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,672.10 : 977,971.92 = 386,387.56 : x
  2. Step 2: Convert to fraction form
    708,672.10/977,971.92 = 386,387.56/x
  3. Step 3: Cross multiply
    708,672.10x = 977,971.92 × 386,387.56
  4. Step 4: Simplify right side
    708,672.10x = 377,876,183,917.32
  5. Step 5: Solve for x
    x = 377,876,183,917.32/708,672.10
  6. Step 6: Final answer
    x = 533,217.24

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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.