Home / 915,351.12-1,372,689.72-316,158.48

Finding the Fourth Proportional to 915,351.12, 1,372,689.72 and 316,158.48

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Solution

The fourth proportional to 915,351.12, 1,372,689.72 and 316,158.48 is: 474,121.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,351.12 : 1,372,689.72 = 316,158.48 : x
  2. Step 2: Convert to fraction form
    915,351.12/1,372,689.72 = 316,158.48/x
  3. Step 3: Cross multiply
    915,351.12x = 1,372,689.72 × 316,158.48
  4. Step 4: Simplify right side
    915,351.12x = 433,987,495,386.83
  5. Step 5: Solve for x
    x = 433,987,495,386.83/915,351.12
  6. Step 6: Final answer
    x = 474,121.34

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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.