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Finding the Fourth Proportional to 607,908.20, 911,862.30 and 489,810.20

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Solution

The fourth proportional to 607,908.20, 911,862.30 and 489,810.20 is: 734,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,908.20 : 911,862.30 = 489,810.20 : x
  2. Step 2: Convert to fraction form
    607,908.20/911,862.30 = 489,810.20/x
  3. Step 3: Cross multiply
    607,908.20x = 911,862.30 × 489,810.20
  4. Step 4: Simplify right side
    607,908.20x = 446,639,455,535.46
  5. Step 5: Solve for x
    x = 446,639,455,535.46/607,908.20
  6. Step 6: Final answer
    x = 734,715.30

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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.