Home / 671,871.40-1,005,440.02-419,270.74

Finding the Fourth Proportional to 671,871.40, 1,005,440.02 and 419,270.74

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Solution

The fourth proportional to 671,871.40, 1,005,440.02 and 419,270.74 is: 627,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,871.40 : 1,005,440.02 = 419,270.74 : x
  2. Step 2: Convert to fraction form
    671,871.40/1,005,440.02 = 419,270.74/x
  3. Step 3: Cross multiply
    671,871.40x = 1,005,440.02 × 419,270.74
  4. Step 4: Simplify right side
    671,871.40x = 421,551,581,211.02
  5. Step 5: Solve for x
    x = 421,551,581,211.02/671,871.40
  6. Step 6: Final answer
    x = 627,428.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.