Home / 643,931.80-888,581.46-357,429.34

Finding the Fourth Proportional to 643,931.80, 888,581.46 and 357,429.34

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Solution

The fourth proportional to 643,931.80, 888,581.46 and 357,429.34 is: 493,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,931.80 : 888,581.46 = 357,429.34 : x
  2. Step 2: Convert to fraction form
    643,931.80/888,581.46 = 357,429.34/x
  3. Step 3: Cross multiply
    643,931.80x = 888,581.46 × 357,429.34
  4. Step 4: Simplify right side
    643,931.80x = 317,605,084,784.04
  5. Step 5: Solve for x
    x = 317,605,084,784.04/643,931.80
  6. Step 6: Final answer
    x = 493,227.83

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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.