Home / 1,187,689.64-1,781,615.10-477,717.80

Finding the Fourth Proportional to 1,187,689.64, 1,781,615.10 and 477,717.80

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Solution

The fourth proportional to 1,187,689.64, 1,781,615.10 and 477,717.80 is: 716,609.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,689.64 : 1,781,615.10 = 477,717.80 : x
  2. Step 2: Convert to fraction form
    1,187,689.64/1,781,615.10 = 477,717.80/x
  3. Step 3: Cross multiply
    1,187,689.64x = 1,781,615.10 × 477,717.80
  4. Step 4: Simplify right side
    1,187,689.64x = 851,109,246,018.78
  5. Step 5: Solve for x
    x = 851,109,246,018.78/1,187,689.64
  6. Step 6: Final answer
    x = 716,609.14

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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.