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Finding the Fourth Proportional to 875,018.96, 1,312,637.92 and 342,470.96

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Solution

The fourth proportional to 875,018.96, 1,312,637.92 and 342,470.96 is: 513,749.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,018.96 : 1,312,637.92 = 342,470.96 : x
  2. Step 2: Convert to fraction form
    875,018.96/1,312,637.92 = 342,470.96/x
  3. Step 3: Cross multiply
    875,018.96x = 1,312,637.92 × 342,470.96
  4. Step 4: Simplify right side
    875,018.96x = 449,540,368,594.80
  5. Step 5: Solve for x
    x = 449,540,368,594.80/875,018.96
  6. Step 6: Final answer
    x = 513,749.29

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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.