Home / 1,379,208,002.20-2,068,806,560.10-409,859,618.20

Finding the Fourth Proportional to 1,379,208,002.20, 2,068,806,560.10 and 409,859,618.20

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Solution

The fourth proportional to 1,379,208,002.20, 2,068,806,560.10 and 409,859,618.20 is: 614,787,809.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,208,002.20 : 2,068,806,560.10 = 409,859,618.20 : x
  2. Step 2: Convert to fraction form
    1,379,208,002.20/2,068,806,560.10 = 409,859,618.20/x
  3. Step 3: Cross multiply
    1,379,208,002.20x = 2,068,806,560.10 × 409,859,618.20
  4. Step 4: Simplify right side
    1,379,208,002.20x = 847,920,266,852,241,280
  5. Step 5: Solve for x
    x = 847,920,266,852,241,280/1,379,208,002.20
  6. Step 6: Final answer
    x = 614,787,809.74

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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.