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Finding the Fourth Proportional to 662,106.80, 993,160.20 and 425,716.40

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Solution

The fourth proportional to 662,106.80, 993,160.20 and 425,716.40 is: 638,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,106.80 : 993,160.20 = 425,716.40 : x
  2. Step 2: Convert to fraction form
    662,106.80/993,160.20 = 425,716.40/x
  3. Step 3: Cross multiply
    662,106.80x = 993,160.20 × 425,716.40
  4. Step 4: Simplify right side
    662,106.80x = 422,804,584,967.28
  5. Step 5: Solve for x
    x = 422,804,584,967.28/662,106.80
  6. Step 6: Final answer
    x = 638,574.60

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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.