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Finding the Fourth Proportional to 607,315.40, 910,973.10 and 408,249.80

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Solution

The fourth proportional to 607,315.40, 910,973.10 and 408,249.80 is: 612,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,315.40 : 910,973.10 = 408,249.80 : x
  2. Step 2: Convert to fraction form
    607,315.40/910,973.10 = 408,249.80/x
  3. Step 3: Cross multiply
    607,315.40x = 910,973.10 × 408,249.80
  4. Step 4: Simplify right side
    607,315.40x = 371,904,585,880.38
  5. Step 5: Solve for x
    x = 371,904,585,880.38/607,315.40
  6. Step 6: Final answer
    x = 612,374.70

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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.