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Finding the Fourth Proportional to 495,363.20, 683,601.15 and 280,503.20

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Solution

The fourth proportional to 495,363.20, 683,601.15 and 280,503.20 is: 387,094.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,363.20 : 683,601.15 = 280,503.20 : x
  2. Step 2: Convert to fraction form
    495,363.20/683,601.15 = 280,503.20/x
  3. Step 3: Cross multiply
    495,363.20x = 683,601.15 × 280,503.20
  4. Step 4: Simplify right side
    495,363.20x = 191,752,312,859.57
  5. Step 5: Solve for x
    x = 191,752,312,859.57/495,363.20
  6. Step 6: Final answer
    x = 387,094.39

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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.