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Finding the Fourth Proportional to 497,015.60, 745,523.40 and 319,722.80

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Solution

The fourth proportional to 497,015.60, 745,523.40 and 319,722.80 is: 479,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,015.60 : 745,523.40 = 319,722.80 : x
  2. Step 2: Convert to fraction form
    497,015.60/745,523.40 = 319,722.80/x
  3. Step 3: Cross multiply
    497,015.60x = 745,523.40 × 319,722.80
  4. Step 4: Simplify right side
    497,015.60x = 238,360,828,913.52
  5. Step 5: Solve for x
    x = 238,360,828,913.52/497,015.60
  6. Step 6: Final answer
    x = 479,584.20

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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.