Home / 489,981.90-676,133.55-275,105.10

Finding the Fourth Proportional to 489,981.90, 676,133.55 and 275,105.10

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Solution

The fourth proportional to 489,981.90, 676,133.55 and 275,105.10 is: 379,621.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,981.90 : 676,133.55 = 275,105.10 : x
  2. Step 2: Convert to fraction form
    489,981.90/676,133.55 = 275,105.10/x
  3. Step 3: Cross multiply
    489,981.90x = 676,133.55 × 275,105.10
  4. Step 4: Simplify right side
    489,981.90x = 186,007,787,886.11
  5. Step 5: Solve for x
    x = 186,007,787,886.11/489,981.90
  6. Step 6: Final answer
    x = 379,621.75

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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.