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Finding the Fourth Proportional to 682,818.19, 942,148.41 and 392,373.65

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Solution

The fourth proportional to 682,818.19, 942,148.41 and 392,373.65 is: 541,394.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,818.19 : 942,148.41 = 392,373.65 : x
  2. Step 2: Convert to fraction form
    682,818.19/942,148.41 = 392,373.65/x
  3. Step 3: Cross multiply
    682,818.19x = 942,148.41 × 392,373.65
  4. Step 4: Simplify right side
    682,818.19x = 369,674,210,473.40
  5. Step 5: Solve for x
    x = 369,674,210,473.40/682,818.19
  6. Step 6: Final answer
    x = 541,394.79

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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.