Home / 1,126,031.12-1,554,034.64-642,669.47

Finding the Fourth Proportional to 1,126,031.12, 1,554,034.64 and 642,669.47

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Solution

The fourth proportional to 1,126,031.12, 1,554,034.64 and 642,669.47 is: 886,947.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,031.12 : 1,554,034.64 = 642,669.47 : x
  2. Step 2: Convert to fraction form
    1,126,031.12/1,554,034.64 = 642,669.47/x
  3. Step 3: Cross multiply
    1,126,031.12x = 1,554,034.64 × 642,669.47
  4. Step 4: Simplify right side
    1,126,031.12x = 998,730,607,466.92
  5. Step 5: Solve for x
    x = 998,730,607,466.92/1,126,031.12
  6. Step 6: Final answer
    x = 886,947.61

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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.