Home / 869,719.60-1,304,579.40-397,327.60

Finding the Fourth Proportional to 869,719.60, 1,304,579.40 and 397,327.60

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Solution

The fourth proportional to 869,719.60, 1,304,579.40 and 397,327.60 is: 595,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,719.60 : 1,304,579.40 = 397,327.60 : x
  2. Step 2: Convert to fraction form
    869,719.60/1,304,579.40 = 397,327.60/x
  3. Step 3: Cross multiply
    869,719.60x = 1,304,579.40 × 397,327.60
  4. Step 4: Simplify right side
    869,719.60x = 518,345,402,011.44
  5. Step 5: Solve for x
    x = 518,345,402,011.44/869,719.60
  6. Step 6: Final answer
    x = 595,991.40

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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.