Home / 643,427.84-887,931.47-356,947.93

Finding the Fourth Proportional to 643,427.84, 887,931.47 and 356,947.93

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Solution

The fourth proportional to 643,427.84, 887,931.47 and 356,947.93 is: 492,588.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,427.84 : 887,931.47 = 356,947.93 : x
  2. Step 2: Convert to fraction form
    643,427.84/887,931.47 = 356,947.93/x
  3. Step 3: Cross multiply
    643,427.84x = 887,931.47 × 356,947.93
  4. Step 4: Simplify right side
    643,427.84x = 316,945,300,198.36
  5. Step 5: Solve for x
    x = 316,945,300,198.36/643,427.84
  6. Step 6: Final answer
    x = 492,588.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.