Home / 861,752.34-1,189,389.69-499,256.82

Finding the Fourth Proportional to 861,752.34, 1,189,389.69 and 499,256.82

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Solution

The fourth proportional to 861,752.34, 1,189,389.69 and 499,256.82 is: 689,073.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,752.34 : 1,189,389.69 = 499,256.82 : x
  2. Step 2: Convert to fraction form
    861,752.34/1,189,389.69 = 499,256.82/x
  3. Step 3: Cross multiply
    861,752.34x = 1,189,389.69 × 499,256.82
  4. Step 4: Simplify right side
    861,752.34x = 593,810,914,370.19
  5. Step 5: Solve for x
    x = 593,810,914,370.19/861,752.34
  6. Step 6: Final answer
    x = 689,073.75

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1.5x scale

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.