Home / 485,340.06-669,788.64-270,478.20

Finding the Fourth Proportional to 485,340.06, 669,788.64 and 270,478.20

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Solution

The fourth proportional to 485,340.06, 669,788.64 and 270,478.20 is: 373,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,340.06 : 669,788.64 = 270,478.20 : x
  2. Step 2: Convert to fraction form
    485,340.06/669,788.64 = 270,478.20/x
  3. Step 3: Cross multiply
    485,340.06x = 669,788.64 × 270,478.20
  4. Step 4: Simplify right side
    485,340.06x = 181,163,225,727.65
  5. Step 5: Solve for x
    x = 181,163,225,727.65/485,340.06
  6. Step 6: Final answer
    x = 373,270.70

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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.