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Finding the Fourth Proportional to 495,490.80, 684,061.08 and 326,217

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Solution

The fourth proportional to 495,490.80, 684,061.08 and 326,217 is: 450,366.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,490.80 : 684,061.08 = 326,217 : x
  2. Step 2: Convert to fraction form
    495,490.80/684,061.08 = 326,217/x
  3. Step 3: Cross multiply
    495,490.80x = 684,061.08 × 326,217
  4. Step 4: Simplify right side
    495,490.80x = 223,152,353,334.36
  5. Step 5: Solve for x
    x = 223,152,353,334.36/495,490.80
  6. Step 6: Final answer
    x = 450,366.29

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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.