Home / 648,561.60-972,842.40-205,329.60

Finding the Fourth Proportional to 648,561.60, 972,842.40 and 205,329.60

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Solution

The fourth proportional to 648,561.60, 972,842.40 and 205,329.60 is: 307,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,561.60 : 972,842.40 = 205,329.60 : x
  2. Step 2: Convert to fraction form
    648,561.60/972,842.40 = 205,329.60/x
  3. Step 3: Cross multiply
    648,561.60x = 972,842.40 × 205,329.60
  4. Step 4: Simplify right side
    648,561.60x = 199,753,340,855.04
  5. Step 5: Solve for x
    x = 199,753,340,855.04/648,561.60
  6. Step 6: Final answer
    x = 307,994.40

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Double scale
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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.