Home / 821,036.40-1,232,821.80-447,788.40

Finding the Fourth Proportional to 821,036.40, 1,232,821.80 and 447,788.40

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Solution

The fourth proportional to 821,036.40, 1,232,821.80 and 447,788.40 is: 672,373.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,036.40 : 1,232,821.80 = 447,788.40 : x
  2. Step 2: Convert to fraction form
    821,036.40/1,232,821.80 = 447,788.40/x
  3. Step 3: Cross multiply
    821,036.40x = 1,232,821.80 × 447,788.40
  4. Step 4: Simplify right side
    821,036.40x = 552,043,301,307.12
  5. Step 5: Solve for x
    x = 552,043,301,307.12/821,036.40
  6. Step 6: Final answer
    x = 672,373.72

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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.