Home / 778,640.70-1,168,289.10-423,909.30

Finding the Fourth Proportional to 778,640.70, 1,168,289.10 and 423,909.30

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Solution

The fourth proportional to 778,640.70, 1,168,289.10 and 423,909.30 is: 636,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,640.70 : 1,168,289.10 = 423,909.30 : x
  2. Step 2: Convert to fraction form
    778,640.70/1,168,289.10 = 423,909.30/x
  3. Step 3: Cross multiply
    778,640.70x = 1,168,289.10 × 423,909.30
  4. Step 4: Simplify right side
    778,640.70x = 495,248,614,578.63
  5. Step 5: Solve for x
    x = 495,248,614,578.63/778,640.70
  6. Step 6: Final answer
    x = 636,042.55

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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.