Home / 1,211,134,119.80-1,817,551,485.30-521,536,278.20

Finding the Fourth Proportional to 1,211,134,119.80, 1,817,551,485.30 and 521,536,278.20

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Solution

The fourth proportional to 1,211,134,119.80, 1,817,551,485.30 and 521,536,278.20 is: 782,670,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,134,119.80 : 1,817,551,485.30 = 521,536,278.20 : x
  2. Step 2: Convert to fraction form
    1,211,134,119.80/1,817,551,485.30 = 521,536,278.20/x
  3. Step 3: Cross multiply
    1,211,134,119.80x = 1,817,551,485.30 × 521,536,278.20
  4. Step 4: Simplify right side
    1,211,134,119.80x = 947,919,037,080,243,968
  5. Step 5: Solve for x
    x = 947,919,037,080,243,968/1,211,134,119.80
  6. Step 6: Final answer
    x = 782,670,574.29

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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.