Home / 767,749.86-1,059,492.15-428,217.84

Finding the Fourth Proportional to 767,749.86, 1,059,492.15 and 428,217.84

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Solution

The fourth proportional to 767,749.86, 1,059,492.15 and 428,217.84 is: 590,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,749.86 : 1,059,492.15 = 428,217.84 : x
  2. Step 2: Convert to fraction form
    767,749.86/1,059,492.15 = 428,217.84/x
  3. Step 3: Cross multiply
    767,749.86x = 1,059,492.15 × 428,217.84
  4. Step 4: Simplify right side
    767,749.86x = 453,693,439,969.96
  5. Step 5: Solve for x
    x = 453,693,439,969.96/767,749.86
  6. Step 6: Final answer
    x = 590,939.14

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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.