Home / 643,546.30-888,094.20-357,066.76

Finding the Fourth Proportional to 643,546.30, 888,094.20 and 357,066.76

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Solution

The fourth proportional to 643,546.30, 888,094.20 and 357,066.76 is: 492,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,546.30 : 888,094.20 = 357,066.76 : x
  2. Step 2: Convert to fraction form
    643,546.30/888,094.20 = 357,066.76/x
  3. Step 3: Cross multiply
    643,546.30x = 888,094.20 × 357,066.76
  4. Step 4: Simplify right side
    643,546.30x = 317,108,918,568.79
  5. Step 5: Solve for x
    x = 317,108,918,568.79/643,546.30
  6. Step 6: Final answer
    x = 492,752.30

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Double scale
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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.