Home / 771,988.40-1,157,974.20-316,478.04

Finding the Fourth Proportional to 771,988.40, 1,157,974.20 and 316,478.04

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Solution

The fourth proportional to 771,988.40, 1,157,974.20 and 316,478.04 is: 474,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,988.40 : 1,157,974.20 = 316,478.04 : x
  2. Step 2: Convert to fraction form
    771,988.40/1,157,974.20 = 316,478.04/x
  3. Step 3: Cross multiply
    771,988.40x = 1,157,974.20 × 316,478.04
  4. Step 4: Simplify right side
    771,988.40x = 366,473,401,734.26
  5. Step 5: Solve for x
    x = 366,473,401,734.26/771,988.40
  6. Step 6: Final answer
    x = 474,713.61

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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.