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Finding the Fourth Proportional to 661,536.33, 912,920.13 and 375,056.40

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Solution

The fourth proportional to 661,536.33, 912,920.13 and 375,056.40 is: 517,577.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,536.33 : 912,920.13 = 375,056.40 : x
  2. Step 2: Convert to fraction form
    661,536.33/912,920.13 = 375,056.40/x
  3. Step 3: Cross multiply
    661,536.33x = 912,920.13 × 375,056.40
  4. Step 4: Simplify right side
    661,536.33x = 342,396,537,445.33
  5. Step 5: Solve for x
    x = 342,396,537,445.33/661,536.33
  6. Step 6: Final answer
    x = 517,577.83

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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.