Home / 638,187.60-880,699.08-347,799.30

Finding the Fourth Proportional to 638,187.60, 880,699.08 and 347,799.30

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Solution

The fourth proportional to 638,187.60, 880,699.08 and 347,799.30 is: 479,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,187.60 : 880,699.08 = 347,799.30 : x
  2. Step 2: Convert to fraction form
    638,187.60/880,699.08 = 347,799.30/x
  3. Step 3: Cross multiply
    638,187.60x = 880,699.08 × 347,799.30
  4. Step 4: Simplify right side
    638,187.60x = 306,306,523,534.64
  5. Step 5: Solve for x
    x = 306,306,523,534.64/638,187.60
  6. Step 6: Final answer
    x = 479,963.14

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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.