Home / 698,909.27-964,574.19-388,842.53

Finding the Fourth Proportional to 698,909.27, 964,574.19 and 388,842.53

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Solution

The fourth proportional to 698,909.27, 964,574.19 and 388,842.53 is: 536,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,909.27 : 964,574.19 = 388,842.53 : x
  2. Step 2: Convert to fraction form
    698,909.27/964,574.19 = 388,842.53/x
  3. Step 3: Cross multiply
    698,909.27x = 964,574.19 × 388,842.53
  4. Step 4: Simplify right side
    698,909.27x = 375,067,465,748.42
  5. Step 5: Solve for x
    x = 375,067,465,748.42/698,909.27
  6. Step 6: Final answer
    x = 536,646.86

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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.