Home / 428,896,292.68-643,238,150.82-122,191,062.76

Finding the Fourth Proportional to 428,896,292.68, 643,238,150.82 and 122,191,062.76

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Solution

The fourth proportional to 428,896,292.68, 643,238,150.82 and 122,191,062.76 is: 183,256,313.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,896,292.68 : 643,238,150.82 = 122,191,062.76 : x
  2. Step 2: Convert to fraction form
    428,896,292.68/643,238,150.82 = 122,191,062.76/x
  3. Step 3: Cross multiply
    428,896,292.68x = 643,238,150.82 × 122,191,062.76
  4. Step 4: Simplify right side
    428,896,292.68x = 78,597,953,256,472,976
  5. Step 5: Solve for x
    x = 78,597,953,256,472,976/428,896,292.68
  6. Step 6: Final answer
    x = 183,256,313.00

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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.