Home / 804,669.60-1,207,004.40-431,421.60

Finding the Fourth Proportional to 804,669.60, 1,207,004.40 and 431,421.60

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Solution

The fourth proportional to 804,669.60, 1,207,004.40 and 431,421.60 is: 647,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,669.60 : 1,207,004.40 = 431,421.60 : x
  2. Step 2: Convert to fraction form
    804,669.60/1,207,004.40 = 431,421.60/x
  3. Step 3: Cross multiply
    804,669.60x = 1,207,004.40 × 431,421.60
  4. Step 4: Simplify right side
    804,669.60x = 520,727,769,455.04
  5. Step 5: Solve for x
    x = 520,727,769,455.04/804,669.60
  6. Step 6: Final answer
    x = 647,132.40

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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.