Home / 485,250.90-669,696.07-291,721.26

Finding the Fourth Proportional to 485,250.90, 669,696.07 and 291,721.26

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Solution

The fourth proportional to 485,250.90, 669,696.07 and 291,721.26 is: 402,605.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,250.90 : 669,696.07 = 291,721.26 : x
  2. Step 2: Convert to fraction form
    485,250.90/669,696.07 = 291,721.26/x
  3. Step 3: Cross multiply
    485,250.90x = 669,696.07 × 291,721.26
  4. Step 4: Simplify right side
    485,250.90x = 195,364,581,357.45
  5. Step 5: Solve for x
    x = 195,364,581,357.45/485,250.90
  6. Step 6: Final answer
    x = 402,605.29

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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.