Home / 3,120,605.40-4,680,908.10-1,918,630.20

Finding the Fourth Proportional to 3,120,605.40, 4,680,908.10 and 1,918,630.20

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Solution

The fourth proportional to 3,120,605.40, 4,680,908.10 and 1,918,630.20 is: 2,877,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,605.40 : 4,680,908.10 = 1,918,630.20 : x
  2. Step 2: Convert to fraction form
    3,120,605.40/4,680,908.10 = 1,918,630.20/x
  3. Step 3: Cross multiply
    3,120,605.40x = 4,680,908.10 × 1,918,630.20
  4. Step 4: Simplify right side
    3,120,605.40x = 8,980,931,644,084.62
  5. Step 5: Solve for x
    x = 8,980,931,644,084.62/3,120,605.40
  6. Step 6: Final answer
    x = 2,877,945.30

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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.