Home / 1,321,536,420.72-1,980,518,938.56-503,202,311.28

Finding the Fourth Proportional to 1,321,536,420.72, 1,980,518,938.56 and 503,202,311.28

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Solution

The fourth proportional to 1,321,536,420.72, 1,980,518,938.56 and 503,202,311.28 is: 754,123,527.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,536,420.72 : 1,980,518,938.56 = 503,202,311.28 : x
  2. Step 2: Convert to fraction form
    1,321,536,420.72/1,980,518,938.56 = 503,202,311.28/x
  3. Step 3: Cross multiply
    1,321,536,420.72x = 1,980,518,938.56 × 503,202,311.28
  4. Step 4: Simplify right side
    1,321,536,420.72x = 996,601,707,417,204,224
  5. Step 5: Solve for x
    x = 996,601,707,417,204,224/1,321,536,420.72
  6. Step 6: Final answer
    x = 754,123,527.58

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1.5x scale

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.