Home / 880,298.40-1,320,447.60-319,130.40

Finding the Fourth Proportional to 880,298.40, 1,320,447.60 and 319,130.40

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Solution

The fourth proportional to 880,298.40, 1,320,447.60 and 319,130.40 is: 478,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,298.40 : 1,320,447.60 = 319,130.40 : x
  2. Step 2: Convert to fraction form
    880,298.40/1,320,447.60 = 319,130.40/x
  3. Step 3: Cross multiply
    880,298.40x = 1,320,447.60 × 319,130.40
  4. Step 4: Simplify right side
    880,298.40x = 421,394,970,767.04
  5. Step 5: Solve for x
    x = 421,394,970,767.04/880,298.40
  6. Step 6: Final answer
    x = 478,695.60

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Similar ratio
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1.5x scale

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.