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Finding the Fourth Proportional to 489,426.84, 675,711.45 and 326,312.82

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Solution

The fourth proportional to 489,426.84, 675,711.45 and 326,312.82 is: 450,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,426.84 : 675,711.45 = 326,312.82 : x
  2. Step 2: Convert to fraction form
    489,426.84/675,711.45 = 326,312.82/x
  3. Step 3: Cross multiply
    489,426.84x = 675,711.45 × 326,312.82
  4. Step 4: Simplify right side
    489,426.84x = 220,493,308,755.79
  5. Step 5: Solve for x
    x = 220,493,308,755.79/489,426.84
  6. Step 6: Final answer
    x = 450,513.32

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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.