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Finding the Fourth Proportional to 456,002.40, 684,003.60 and 123,578.40

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Solution

The fourth proportional to 456,002.40, 684,003.60 and 123,578.40 is: 185,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,002.40 : 684,003.60 = 123,578.40 : x
  2. Step 2: Convert to fraction form
    456,002.40/684,003.60 = 123,578.40/x
  3. Step 3: Cross multiply
    456,002.40x = 684,003.60 × 123,578.40
  4. Step 4: Simplify right side
    456,002.40x = 84,528,070,482.24
  5. Step 5: Solve for x
    x = 84,528,070,482.24/456,002.40
  6. Step 6: Final answer
    x = 185,367.60

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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.