Home / 643,683.04-887,913.24-401,545.12

Finding the Fourth Proportional to 643,683.04, 887,913.24 and 401,545.12

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Solution

The fourth proportional to 643,683.04, 887,913.24 and 401,545.12 is: 553,901.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,683.04 : 887,913.24 = 401,545.12 : x
  2. Step 2: Convert to fraction form
    643,683.04/887,913.24 = 401,545.12/x
  3. Step 3: Cross multiply
    643,683.04x = 887,913.24 × 401,545.12
  4. Step 4: Simplify right side
    643,683.04x = 356,537,228,505.39
  5. Step 5: Solve for x
    x = 356,537,228,505.39/643,683.04
  6. Step 6: Final answer
    x = 553,901.85

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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.