Home / 643,769.56-888,385.08-357,282.28

Finding the Fourth Proportional to 643,769.56, 888,385.08 and 357,282.28

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Solution

The fourth proportional to 643,769.56, 888,385.08 and 357,282.28 is: 493,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,769.56 : 888,385.08 = 357,282.28 : x
  2. Step 2: Convert to fraction form
    643,769.56/888,385.08 = 357,282.28/x
  3. Step 3: Cross multiply
    643,769.56x = 888,385.08 × 357,282.28
  4. Step 4: Simplify right side
    643,769.56x = 317,404,246,900.38
  5. Step 5: Solve for x
    x = 317,404,246,900.38/643,769.56
  6. Step 6: Final answer
    x = 493,040.16

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1.5x scale

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.