Home / 772,743.20-1,157,271.60-378,298.40

Finding the Fourth Proportional to 772,743.20, 1,157,271.60 and 378,298.40

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Solution

The fourth proportional to 772,743.20, 1,157,271.60 and 378,298.40 is: 566,545.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,743.20 : 1,157,271.60 = 378,298.40 : x
  2. Step 2: Convert to fraction form
    772,743.20/1,157,271.60 = 378,298.40/x
  3. Step 3: Cross multiply
    772,743.20x = 1,157,271.60 × 378,298.40
  4. Step 4: Simplify right side
    772,743.20x = 437,793,994,645.44
  5. Step 5: Solve for x
    x = 437,793,994,645.44/772,743.20
  6. Step 6: Final answer
    x = 566,545.26

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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.