Home / 628,319.47-867,095.85-356,405.71

Finding the Fourth Proportional to 628,319.47, 867,095.85 and 356,405.71

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Solution

The fourth proportional to 628,319.47, 867,095.85 and 356,405.71 is: 491,848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,319.47 : 867,095.85 = 356,405.71 : x
  2. Step 2: Convert to fraction form
    628,319.47/867,095.85 = 356,405.71/x
  3. Step 3: Cross multiply
    628,319.47x = 867,095.85 × 356,405.71
  4. Step 4: Simplify right side
    628,319.47x = 309,037,912,057.30
  5. Step 5: Solve for x
    x = 309,037,912,057.30/628,319.47
  6. Step 6: Final answer
    x = 491,848.38

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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.