Home / 643,037.59-887,431.76-356,557.67

Finding the Fourth Proportional to 643,037.59, 887,431.76 and 356,557.67

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Solution

The fourth proportional to 643,037.59, 887,431.76 and 356,557.67 is: 492,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,037.59 : 887,431.76 = 356,557.67 : x
  2. Step 2: Convert to fraction form
    643,037.59/887,431.76 = 356,557.67/x
  3. Step 3: Cross multiply
    643,037.59x = 887,431.76 × 356,557.67
  4. Step 4: Simplify right side
    643,037.59x = 316,420,600,629.60
  5. Step 5: Solve for x
    x = 316,420,600,629.60/643,037.59
  6. Step 6: Final answer
    x = 492,071.70

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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.