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Finding the Fourth Proportional to 489,646.04, 675,715.49 and 274,836.77

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Solution

The fourth proportional to 489,646.04, 675,715.49 and 274,836.77 is: 379,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,646.04 : 675,715.49 = 274,836.77 : x
  2. Step 2: Convert to fraction form
    489,646.04/675,715.49 = 274,836.77/x
  3. Step 3: Cross multiply
    489,646.04x = 675,715.49 × 274,836.77
  4. Step 4: Simplify right side
    489,646.04x = 185,711,457,957.81
  5. Step 5: Solve for x
    x = 185,711,457,957.81/489,646.04
  6. Step 6: Final answer
    x = 379,276.96

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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.