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Finding the Fourth Proportional to 675,419.27, 931,987.28 and 385,068.29

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Solution

The fourth proportional to 675,419.27, 931,987.28 and 385,068.29 is: 531,342.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,419.27 : 931,987.28 = 385,068.29 : x
  2. Step 2: Convert to fraction form
    675,419.27/931,987.28 = 385,068.29/x
  3. Step 3: Cross multiply
    675,419.27x = 931,987.28 × 385,068.29
  4. Step 4: Simplify right side
    675,419.27x = 358,878,744,514.09
  5. Step 5: Solve for x
    x = 358,878,744,514.09/675,419.27
  6. Step 6: Final answer
    x = 531,342.18

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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.