Home / 638,488.90-881,167.17-352,036.18

Finding the Fourth Proportional to 638,488.90, 881,167.17 and 352,036.18

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Solution

The fourth proportional to 638,488.90, 881,167.17 and 352,036.18 is: 485,838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,488.90 : 881,167.17 = 352,036.18 : x
  2. Step 2: Convert to fraction form
    638,488.90/881,167.17 = 352,036.18/x
  3. Step 3: Cross multiply
    638,488.90x = 881,167.17 × 352,036.18
  4. Step 4: Simplify right side
    638,488.90x = 310,202,724,468.21
  5. Step 5: Solve for x
    x = 310,202,724,468.21/638,488.90
  6. Step 6: Final answer
    x = 485,838.87

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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.