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Finding the Fourth Proportional to 479,309.16, 719,205.12 and 319,492.92

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Solution

The fourth proportional to 479,309.16, 719,205.12 and 319,492.92 is: 479,400.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,309.16 : 719,205.12 = 319,492.92 : x
  2. Step 2: Convert to fraction form
    479,309.16/719,205.12 = 319,492.92/x
  3. Step 3: Cross multiply
    479,309.16x = 719,205.12 × 319,492.92
  4. Step 4: Simplify right side
    479,309.16x = 229,780,943,867.75
  5. Step 5: Solve for x
    x = 229,780,943,867.75/479,309.16
  6. Step 6: Final answer
    x = 479,400.28

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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.