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Finding the Fourth Proportional to 661,338.08, 912,717.84 and 374,827.40

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Solution

The fourth proportional to 661,338.08, 912,717.84 and 374,827.40 is: 517,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,338.08 : 912,717.84 = 374,827.40 : x
  2. Step 2: Convert to fraction form
    661,338.08/912,717.84 = 374,827.40/x
  3. Step 3: Cross multiply
    661,338.08x = 912,717.84 × 374,827.40
  4. Step 4: Simplify right side
    661,338.08x = 342,111,654,900.82
  5. Step 5: Solve for x
    x = 342,111,654,900.82/661,338.08
  6. Step 6: Final answer
    x = 517,302.22

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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.