Home / 842,975.71-1,263,872.16-310,428.45

Finding the Fourth Proportional to 842,975.71, 1,263,872.16 and 310,428.45

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Solution

The fourth proportional to 842,975.71, 1,263,872.16 and 310,428.45 is: 465,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,975.71 : 1,263,872.16 = 310,428.45 : x
  2. Step 2: Convert to fraction form
    842,975.71/1,263,872.16 = 310,428.45/x
  3. Step 3: Cross multiply
    842,975.71x = 1,263,872.16 × 310,428.45
  4. Step 4: Simplify right side
    842,975.71x = 392,341,875,626.95
  5. Step 5: Solve for x
    x = 392,341,875,626.95/842,975.71
  6. Step 6: Final answer
    x = 465,424.89

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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.