Home / 628,385.64-867,146.65-356,447.70

Finding the Fourth Proportional to 628,385.64, 867,146.65 and 356,447.70

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Solution

The fourth proportional to 628,385.64, 867,146.65 and 356,447.70 is: 491,883.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,385.64 : 867,146.65 = 356,447.70 : x
  2. Step 2: Convert to fraction form
    628,385.64/867,146.65 = 356,447.70/x
  3. Step 3: Cross multiply
    628,385.64x = 867,146.65 × 356,447.70
  4. Step 4: Simplify right side
    628,385.64x = 309,092,427,531.49
  5. Step 5: Solve for x
    x = 309,092,427,531.49/628,385.64
  6. Step 6: Final answer
    x = 491,883.34

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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.