Home / 1,211,133,821.30-1,817,551,037.55-521,535,979.70

Finding the Fourth Proportional to 1,211,133,821.30, 1,817,551,037.55 and 521,535,979.70

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Solution

The fourth proportional to 1,211,133,821.30, 1,817,551,037.55 and 521,535,979.70 is: 782,670,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,133,821.30 : 1,817,551,037.55 = 521,535,979.70 : x
  2. Step 2: Convert to fraction form
    1,211,133,821.30/1,817,551,037.55 = 521,535,979.70/x
  3. Step 3: Cross multiply
    1,211,133,821.30x = 1,817,551,037.55 × 521,535,979.70
  4. Step 4: Simplify right side
    1,211,133,821.30x = 947,918,261,023,390,720
  5. Step 5: Solve for x
    x = 947,918,261,023,390,720/1,211,133,821.30
  6. Step 6: Final answer
    x = 782,670,126.42

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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.