Home / 721,104.86-1,081,341.72-342,133.70

Finding the Fourth Proportional to 721,104.86, 1,081,341.72 and 342,133.70

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Solution

The fourth proportional to 721,104.86, 1,081,341.72 and 342,133.70 is: 513,050.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,104.86 : 1,081,341.72 = 342,133.70 : x
  2. Step 2: Convert to fraction form
    721,104.86/1,081,341.72 = 342,133.70/x
  3. Step 3: Cross multiply
    721,104.86x = 1,081,341.72 × 342,133.70
  4. Step 4: Simplify right side
    721,104.86x = 369,963,438,221.26
  5. Step 5: Solve for x
    x = 369,963,438,221.26/721,104.86
  6. Step 6: Final answer
    x = 513,050.82

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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.