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Finding the Fourth Proportional to 489,341.80, 734,012.70 and 453,912.40

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Solution

The fourth proportional to 489,341.80, 734,012.70 and 453,912.40 is: 680,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,341.80 : 734,012.70 = 453,912.40 : x
  2. Step 2: Convert to fraction form
    489,341.80/734,012.70 = 453,912.40/x
  3. Step 3: Cross multiply
    489,341.80x = 734,012.70 × 453,912.40
  4. Step 4: Simplify right side
    489,341.80x = 333,177,466,287.48
  5. Step 5: Solve for x
    x = 333,177,466,287.48/489,341.80
  6. Step 6: Final answer
    x = 680,868.60

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Similar ratio
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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.