Home / 987,420.65-1,481,414.67-410,931.71

Finding the Fourth Proportional to 987,420.65, 1,481,414.67 and 410,931.71

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Solution

The fourth proportional to 987,420.65, 1,481,414.67 and 410,931.71 is: 616,515.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,420.65 : 1,481,414.67 = 410,931.71 : x
  2. Step 2: Convert to fraction form
    987,420.65/1,481,414.67 = 410,931.71/x
  3. Step 3: Cross multiply
    987,420.65x = 1,481,414.67 × 410,931.71
  4. Step 4: Simplify right side
    987,420.65x = 608,760,256,155.11
  5. Step 5: Solve for x
    x = 608,760,256,155.11/987,420.65
  6. Step 6: Final answer
    x = 616,515.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.