Home / 721,712.60-1,082,828.10-301,117.40

Finding the Fourth Proportional to 721,712.60, 1,082,828.10 and 301,117.40

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Solution

The fourth proportional to 721,712.60, 1,082,828.10 and 301,117.40 is: 451,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,712.60 : 1,082,828.10 = 301,117.40 : x
  2. Step 2: Convert to fraction form
    721,712.60/1,082,828.10 = 301,117.40/x
  3. Step 3: Cross multiply
    721,712.60x = 1,082,828.10 × 301,117.40
  4. Step 4: Simplify right side
    721,712.60x = 326,058,382,118.94
  5. Step 5: Solve for x
    x = 326,058,382,118.94/721,712.60
  6. Step 6: Final answer
    x = 451,784.25

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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.