Home / 1,211,134,121.80-1,817,551,488.30-521,536,280.20

Finding the Fourth Proportional to 1,211,134,121.80, 1,817,551,488.30 and 521,536,280.20

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Solution

The fourth proportional to 1,211,134,121.80, 1,817,551,488.30 and 521,536,280.20 is: 782,670,577.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,134,121.80 : 1,817,551,488.30 = 521,536,280.20 : x
  2. Step 2: Convert to fraction form
    1,211,134,121.80/1,817,551,488.30 = 521,536,280.20/x
  3. Step 3: Cross multiply
    1,211,134,121.80x = 1,817,551,488.30 × 521,536,280.20
  4. Step 4: Simplify right side
    1,211,134,121.80x = 947,919,042,279,955,712
  5. Step 5: Solve for x
    x = 947,919,042,279,955,712/1,211,134,121.80
  6. Step 6: Final answer
    x = 782,670,577.29

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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.