Home / 721,747.20-1,081,454.40-455,030.40

Finding the Fourth Proportional to 721,747.20, 1,081,454.40 and 455,030.40

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Solution

The fourth proportional to 721,747.20, 1,081,454.40 and 455,030.40 is: 681,810.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,747.20 : 1,081,454.40 = 455,030.40 : x
  2. Step 2: Convert to fraction form
    721,747.20/1,081,454.40 = 455,030.40/x
  3. Step 3: Cross multiply
    721,747.20x = 1,081,454.40 × 455,030.40
  4. Step 4: Simplify right side
    721,747.20x = 492,094,628,213.76
  5. Step 5: Solve for x
    x = 492,094,628,213.76/721,747.20
  6. Step 6: Final answer
    x = 681,810.24

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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.