Home / 770,948.20-1,156,422.30-209,981.80

Finding the Fourth Proportional to 770,948.20, 1,156,422.30 and 209,981.80

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Solution

The fourth proportional to 770,948.20, 1,156,422.30 and 209,981.80 is: 314,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,948.20 : 1,156,422.30 = 209,981.80 : x
  2. Step 2: Convert to fraction form
    770,948.20/1,156,422.30 = 209,981.80/x
  3. Step 3: Cross multiply
    770,948.20x = 1,156,422.30 × 209,981.80
  4. Step 4: Simplify right side
    770,948.20x = 242,827,636,114.14
  5. Step 5: Solve for x
    x = 242,827,636,114.14/770,948.20
  6. Step 6: Final answer
    x = 314,972.70

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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.