Home / 628,560.48-867,432.96-356,639.92

Finding the Fourth Proportional to 628,560.48, 867,432.96 and 356,639.92

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Solution

The fourth proportional to 628,560.48, 867,432.96 and 356,639.92 is: 492,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,560.48 : 867,432.96 = 356,639.92 : x
  2. Step 2: Convert to fraction form
    628,560.48/867,432.96 = 356,639.92/x
  3. Step 3: Cross multiply
    628,560.48x = 867,432.96 × 356,639.92
  4. Step 4: Simplify right side
    628,560.48x = 309,361,221,459.76
  5. Step 5: Solve for x
    x = 309,361,221,459.76/628,560.48
  6. Step 6: Final answer
    x = 492,174.15

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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.