Home / 688,846.90-1,031,427.15-438,171.70

Finding the Fourth Proportional to 688,846.90, 1,031,427.15 and 438,171.70

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Solution

The fourth proportional to 688,846.90, 1,031,427.15 and 438,171.70 is: 656,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,846.90 : 1,031,427.15 = 438,171.70 : x
  2. Step 2: Convert to fraction form
    688,846.90/1,031,427.15 = 438,171.70/x
  3. Step 3: Cross multiply
    688,846.90x = 1,031,427.15 × 438,171.70
  4. Step 4: Simplify right side
    688,846.90x = 451,942,187,741.66
  5. Step 5: Solve for x
    x = 451,942,187,741.66/688,846.90
  6. Step 6: Final answer
    x = 656,085.10

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1.5x scale

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.