Home / 961,812.85-1,443,116.51-421,789.58

Finding the Fourth Proportional to 961,812.85, 1,443,116.51 and 421,789.58

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Solution

The fourth proportional to 961,812.85, 1,443,116.51 and 421,789.58 is: 632,858.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,812.85 : 1,443,116.51 = 421,789.58 : x
  2. Step 2: Convert to fraction form
    961,812.85/1,443,116.51 = 421,789.58/x
  3. Step 3: Cross multiply
    961,812.85x = 1,443,116.51 × 421,789.58
  4. Step 4: Simplify right side
    961,812.85x = 608,691,506,643.97
  5. Step 5: Solve for x
    x = 608,691,506,643.97/961,812.85
  6. Step 6: Final answer
    x = 632,858.57

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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.