Home / 1,030,864.80-1,422,641.32-643,909.32

Finding the Fourth Proportional to 1,030,864.80, 1,422,641.32 and 643,909.32

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Solution

The fourth proportional to 1,030,864.80, 1,422,641.32 and 643,909.32 is: 888,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,864.80 : 1,422,641.32 = 643,909.32 : x
  2. Step 2: Convert to fraction form
    1,030,864.80/1,422,641.32 = 643,909.32/x
  3. Step 3: Cross multiply
    1,030,864.80x = 1,422,641.32 × 643,909.32
  4. Step 4: Simplify right side
    1,030,864.80x = 916,052,004,965.10
  5. Step 5: Solve for x
    x = 916,052,004,965.10/1,030,864.80
  6. Step 6: Final answer
    x = 888,624.78

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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.