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Finding the Fourth Proportional to 675,419.52, 931,987.63 and 385,068.54

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Solution

The fourth proportional to 675,419.52, 931,987.63 and 385,068.54 is: 531,342.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,419.52 : 931,987.63 = 385,068.54 : x
  2. Step 2: Convert to fraction form
    675,419.52/931,987.63 = 385,068.54/x
  3. Step 3: Cross multiply
    675,419.52x = 931,987.63 × 385,068.54
  4. Step 4: Simplify right side
    675,419.52x = 358,879,115,982.16
  5. Step 5: Solve for x
    x = 358,879,115,982.16/675,419.52
  6. Step 6: Final answer
    x = 531,342.53

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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.