Home / 912,387.44-1,368,803.64-643,040.48

Finding the Fourth Proportional to 912,387.44, 1,368,803.64 and 643,040.48

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Solution

The fourth proportional to 912,387.44, 1,368,803.64 and 643,040.48 is: 964,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,387.44 : 1,368,803.64 = 643,040.48 : x
  2. Step 2: Convert to fraction form
    912,387.44/1,368,803.64 = 643,040.48/x
  3. Step 3: Cross multiply
    912,387.44x = 1,368,803.64 × 643,040.48
  4. Step 4: Simplify right side
    912,387.44x = 880,196,149,691.35
  5. Step 5: Solve for x
    x = 880,196,149,691.35/912,387.44
  6. Step 6: Final answer
    x = 964,717.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.