Home / 778,879.28-1,074,886.08-439,347.44

Finding the Fourth Proportional to 778,879.28, 1,074,886.08 and 439,347.44

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Solution

The fourth proportional to 778,879.28, 1,074,886.08 and 439,347.44 is: 606,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,879.28 : 1,074,886.08 = 439,347.44 : x
  2. Step 2: Convert to fraction form
    778,879.28/1,074,886.08 = 439,347.44/x
  3. Step 3: Cross multiply
    778,879.28x = 1,074,886.08 × 439,347.44
  4. Step 4: Simplify right side
    778,879.28x = 472,248,447,539.64
  5. Step 5: Solve for x
    x = 472,248,447,539.64/778,879.28
  6. Step 6: Final answer
    x = 606,317.90

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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.