Home / 763,727.80-1,145,159.70-290,428.60

Finding the Fourth Proportional to 763,727.80, 1,145,159.70 and 290,428.60

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Solution

The fourth proportional to 763,727.80, 1,145,159.70 and 290,428.60 is: 435,478.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,727.80 : 1,145,159.70 = 290,428.60 : x
  2. Step 2: Convert to fraction form
    763,727.80/1,145,159.70 = 290,428.60/x
  3. Step 3: Cross multiply
    763,727.80x = 1,145,159.70 × 290,428.60
  4. Step 4: Simplify right side
    763,727.80x = 332,587,128,447.42
  5. Step 5: Solve for x
    x = 332,587,128,447.42/763,727.80
  6. Step 6: Final answer
    x = 435,478.62

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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.