Home / 642,822.50-887,035.41-356,318.21

Finding the Fourth Proportional to 642,822.50, 887,035.41 and 356,318.21

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Solution

The fourth proportional to 642,822.50, 887,035.41 and 356,318.21 is: 491,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,822.50 : 887,035.41 = 356,318.21 : x
  2. Step 2: Convert to fraction form
    642,822.50/887,035.41 = 356,318.21/x
  3. Step 3: Cross multiply
    642,822.50x = 887,035.41 × 356,318.21
  4. Step 4: Simplify right side
    642,822.50x = 316,066,871,715.41
  5. Step 5: Solve for x
    x = 316,066,871,715.41/642,822.50
  6. Step 6: Final answer
    x = 491,686.07

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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.