Home / 821,439.60-1,232,159.40-448,191.60

Finding the Fourth Proportional to 821,439.60, 1,232,159.40 and 448,191.60

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Solution

The fourth proportional to 821,439.60, 1,232,159.40 and 448,191.60 is: 672,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,439.60 : 1,232,159.40 = 448,191.60 : x
  2. Step 2: Convert to fraction form
    821,439.60/1,232,159.40 = 448,191.60/x
  3. Step 3: Cross multiply
    821,439.60x = 1,232,159.40 × 448,191.60
  4. Step 4: Simplify right side
    821,439.60x = 552,243,492,941.04
  5. Step 5: Solve for x
    x = 552,243,492,941.04/821,439.60
  6. Step 6: Final answer
    x = 672,287.40

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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.