Home / 739,661.28-1,109,621.52-318,953.76

Finding the Fourth Proportional to 739,661.28, 1,109,621.52 and 318,953.76

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Solution

The fourth proportional to 739,661.28, 1,109,621.52 and 318,953.76 is: 478,486.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,661.28 : 1,109,621.52 = 318,953.76 : x
  2. Step 2: Convert to fraction form
    739,661.28/1,109,621.52 = 318,953.76/x
  3. Step 3: Cross multiply
    739,661.28x = 1,109,621.52 × 318,953.76
  4. Step 4: Simplify right side
    739,661.28x = 353,917,955,980.92
  5. Step 5: Solve for x
    x = 353,917,955,980.92/739,661.28
  6. Step 6: Final answer
    x = 478,486.53

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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.