Home / 778,842.51-1,074,856.65-434,745.40

Finding the Fourth Proportional to 778,842.51, 1,074,856.65 and 434,745.40

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Solution

The fourth proportional to 778,842.51, 1,074,856.65 and 434,745.40 is: 599,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,842.51 : 1,074,856.65 = 434,745.40 : x
  2. Step 2: Convert to fraction form
    778,842.51/1,074,856.65 = 434,745.40/x
  3. Step 3: Cross multiply
    778,842.51x = 1,074,856.65 × 434,745.40
  4. Step 4: Simplify right side
    778,842.51x = 467,288,984,246.91
  5. Step 5: Solve for x
    x = 467,288,984,246.91/778,842.51
  6. Step 6: Final answer
    x = 599,978.79

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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.