Home / 643,932.80-888,582.84-357,430.34

Finding the Fourth Proportional to 643,932.80, 888,582.84 and 357,430.34

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Solution

The fourth proportional to 643,932.80, 888,582.84 and 357,430.34 is: 493,229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,932.80 : 888,582.84 = 357,430.34 : x
  2. Step 2: Convert to fraction form
    643,932.80/888,582.84 = 357,430.34/x
  3. Step 3: Cross multiply
    643,932.80x = 888,582.84 × 357,430.34
  4. Step 4: Simplify right side
    643,932.80x = 317,606,466,619.37
  5. Step 5: Solve for x
    x = 317,606,466,619.37/643,932.80
  6. Step 6: Final answer
    x = 493,229.21

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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.