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Finding the Fourth Proportional to 670,761.02, 925,324.98 and 398,636.30

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Solution

The fourth proportional to 670,761.02, 925,324.98 and 398,636.30 is: 549,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,761.02 : 925,324.98 = 398,636.30 : x
  2. Step 2: Convert to fraction form
    670,761.02/925,324.98 = 398,636.30/x
  3. Step 3: Cross multiply
    670,761.02x = 925,324.98 × 398,636.30
  4. Step 4: Simplify right side
    670,761.02x = 368,868,126,324.77
  5. Step 5: Solve for x
    x = 368,868,126,324.77/670,761.02
  6. Step 6: Final answer
    x = 549,924.81

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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.