Home / 1,145,375.64-1,580,428.72-661,985.76

Finding the Fourth Proportional to 1,145,375.64, 1,580,428.72 and 661,985.76

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Solution

The fourth proportional to 1,145,375.64, 1,580,428.72 and 661,985.76 is: 913,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,375.64 : 1,580,428.72 = 661,985.76 : x
  2. Step 2: Convert to fraction form
    1,145,375.64/1,580,428.72 = 661,985.76/x
  3. Step 3: Cross multiply
    1,145,375.64x = 1,580,428.72 × 661,985.76
  4. Step 4: Simplify right side
    1,145,375.64x = 1,046,221,310,365.45
  5. Step 5: Solve for x
    x = 1,046,221,310,365.45/1,145,375.64
  6. Step 6: Final answer
    x = 913,430.73

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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.