Home / 498,947.61-688,774.29-317,907.75

Finding the Fourth Proportional to 498,947.61, 688,774.29 and 317,907.75

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Solution

The fourth proportional to 498,947.61, 688,774.29 and 317,907.75 is: 438,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,947.61 : 688,774.29 = 317,907.75 : x
  2. Step 2: Convert to fraction form
    498,947.61/688,774.29 = 317,907.75/x
  3. Step 3: Cross multiply
    498,947.61x = 688,774.29 × 317,907.75
  4. Step 4: Simplify right side
    498,947.61x = 218,966,684,791.75
  5. Step 5: Solve for x
    x = 218,966,684,791.75/498,947.61
  6. Step 6: Final answer
    x = 438,857.07

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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.