Home / 521,895.10-721,531.46-385,714.26

Finding the Fourth Proportional to 521,895.10, 721,531.46 and 385,714.26

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Solution

The fourth proportional to 521,895.10, 721,531.46 and 385,714.26 is: 533,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,895.10 : 721,531.46 = 385,714.26 : x
  2. Step 2: Convert to fraction form
    521,895.10/721,531.46 = 385,714.26/x
  3. Step 3: Cross multiply
    521,895.10x = 721,531.46 × 385,714.26
  4. Step 4: Simplify right side
    521,895.10x = 278,304,973,160.62
  5. Step 5: Solve for x
    x = 278,304,973,160.62/521,895.10
  6. Step 6: Final answer
    x = 533,258.45

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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.