Home / 778,830.60-1,168,403.85-442,032.60

Finding the Fourth Proportional to 778,830.60, 1,168,403.85 and 442,032.60

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Solution

The fourth proportional to 778,830.60, 1,168,403.85 and 442,032.60 is: 663,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,830.60 : 1,168,403.85 = 442,032.60 : x
  2. Step 2: Convert to fraction form
    778,830.60/1,168,403.85 = 442,032.60/x
  3. Step 3: Cross multiply
    778,830.60x = 1,168,403.85 × 442,032.60
  4. Step 4: Simplify right side
    778,830.60x = 516,472,591,665.51
  5. Step 5: Solve for x
    x = 516,472,591,665.51/778,830.60
  6. Step 6: Final answer
    x = 663,138.55

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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.