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Finding the Fourth Proportional to 638,342.32, 880,885.88 and 347,947.50

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Solution

The fourth proportional to 638,342.32, 880,885.88 and 347,947.50 is: 480,153.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,342.32 : 880,885.88 = 347,947.50 : x
  2. Step 2: Convert to fraction form
    638,342.32/880,885.88 = 347,947.50/x
  3. Step 3: Cross multiply
    638,342.32x = 880,885.88 × 347,947.50
  4. Step 4: Simplify right side
    638,342.32x = 306,502,039,731.30
  5. Step 5: Solve for x
    x = 306,502,039,731.30/638,342.32
  6. Step 6: Final answer
    x = 480,153.09

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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.