Home / 677,948.80-1,016,923.20-643,734.40

Finding the Fourth Proportional to 677,948.80, 1,016,923.20 and 643,734.40

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Solution

The fourth proportional to 677,948.80, 1,016,923.20 and 643,734.40 is: 965,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,948.80 : 1,016,923.20 = 643,734.40 : x
  2. Step 2: Convert to fraction form
    677,948.80/1,016,923.20 = 643,734.40/x
  3. Step 3: Cross multiply
    677,948.80x = 1,016,923.20 × 643,734.40
  4. Step 4: Simplify right side
    677,948.80x = 654,628,445,998.08
  5. Step 5: Solve for x
    x = 654,628,445,998.08/677,948.80
  6. Step 6: Final answer
    x = 965,601.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.