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Finding the Fourth Proportional to 495,492.34, 683,778.84 and 280,673.83

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Solution

The fourth proportional to 495,492.34, 683,778.84 and 280,673.83 is: 387,329.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,492.34 : 683,778.84 = 280,673.83 : x
  2. Step 2: Convert to fraction form
    495,492.34/683,778.84 = 280,673.83/x
  3. Step 3: Cross multiply
    495,492.34x = 683,778.84 × 280,673.83
  4. Step 4: Simplify right side
    495,492.34x = 191,918,825,895.76
  5. Step 5: Solve for x
    x = 191,918,825,895.76/495,492.34
  6. Step 6: Final answer
    x = 387,329.55

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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.