Home / 778,245.04-1,074,145.14-491,582.80

Finding the Fourth Proportional to 778,245.04, 1,074,145.14 and 491,582.80

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Solution

The fourth proportional to 778,245.04, 1,074,145.14 and 491,582.80 is: 678,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,245.04 : 1,074,145.14 = 491,582.80 : x
  2. Step 2: Convert to fraction form
    778,245.04/1,074,145.14 = 491,582.80/x
  3. Step 3: Cross multiply
    778,245.04x = 1,074,145.14 × 491,582.80
  4. Step 4: Simplify right side
    778,245.04x = 528,031,275,527.59
  5. Step 5: Solve for x
    x = 528,031,275,527.59/778,245.04
  6. Step 6: Final answer
    x = 678,489.74

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Double scale
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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.