Home / 688,731.85-1,031,379.60-435,247.61

Finding the Fourth Proportional to 688,731.85, 1,031,379.60 and 435,247.61

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Solution

The fourth proportional to 688,731.85, 1,031,379.60 and 435,247.61 is: 651,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,731.85 : 1,031,379.60 = 435,247.61 : x
  2. Step 2: Convert to fraction form
    688,731.85/1,031,379.60 = 435,247.61/x
  3. Step 3: Cross multiply
    688,731.85x = 1,031,379.60 × 435,247.61
  4. Step 4: Simplify right side
    688,731.85x = 448,905,510,113.38
  5. Step 5: Solve for x
    x = 448,905,510,113.38/688,731.85
  6. Step 6: Final answer
    x = 651,785.61

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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.