Home / 772,972.80-1,159,459.20-212,006.40

Finding the Fourth Proportional to 772,972.80, 1,159,459.20 and 212,006.40

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Solution

The fourth proportional to 772,972.80, 1,159,459.20 and 212,006.40 is: 318,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,972.80 : 1,159,459.20 = 212,006.40 : x
  2. Step 2: Convert to fraction form
    772,972.80/1,159,459.20 = 212,006.40/x
  3. Step 3: Cross multiply
    772,972.80x = 1,159,459.20 × 212,006.40
  4. Step 4: Simplify right side
    772,972.80x = 245,812,770,938.88
  5. Step 5: Solve for x
    x = 245,812,770,938.88/772,972.80
  6. Step 6: Final answer
    x = 318,009.60

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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.