Home / 489,811.40-734,717.10-134,880.20

Finding the Fourth Proportional to 489,811.40, 734,717.10 and 134,880.20

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Solution

The fourth proportional to 489,811.40, 734,717.10 and 134,880.20 is: 202,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,811.40 : 734,717.10 = 134,880.20 : x
  2. Step 2: Convert to fraction form
    489,811.40/734,717.10 = 134,880.20/x
  3. Step 3: Cross multiply
    489,811.40x = 734,717.10 × 134,880.20
  4. Step 4: Simplify right side
    489,811.40x = 99,098,789,391.42
  5. Step 5: Solve for x
    x = 99,098,789,391.42/489,811.40
  6. Step 6: Final answer
    x = 202,320.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.