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Finding the Fourth Proportional to 661,615.12, 913,001.04 and 375,154.48

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Solution

The fourth proportional to 661,615.12, 913,001.04 and 375,154.48 is: 517,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,615.12 : 913,001.04 = 375,154.48 : x
  2. Step 2: Convert to fraction form
    661,615.12/913,001.04 = 375,154.48/x
  3. Step 3: Cross multiply
    661,615.12x = 913,001.04 × 375,154.48
  4. Step 4: Simplify right side
    661,615.12x = 342,516,430,400.66
  5. Step 5: Solve for x
    x = 342,516,430,400.66/661,615.12
  6. Step 6: Final answer
    x = 517,697.40

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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.