Home / 772,749.60-1,066,292.84-428,581.40

Finding the Fourth Proportional to 772,749.60, 1,066,292.84 and 428,581.40

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Solution

The fourth proportional to 772,749.60, 1,066,292.84 and 428,581.40 is: 591,385.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,749.60 : 1,066,292.84 = 428,581.40 : x
  2. Step 2: Convert to fraction form
    772,749.60/1,066,292.84 = 428,581.40/x
  3. Step 3: Cross multiply
    772,749.60x = 1,066,292.84 × 428,581.40
  4. Step 4: Simplify right side
    772,749.60x = 456,993,278,177.18
  5. Step 5: Solve for x
    x = 456,993,278,177.18/772,749.60
  6. Step 6: Final answer
    x = 591,385.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.