Home / 763,769.20-1,144,098.60-390,002.80

Finding the Fourth Proportional to 763,769.20, 1,144,098.60 and 390,002.80

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Solution

The fourth proportional to 763,769.20, 1,144,098.60 and 390,002.80 is: 584,210.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,769.20 : 1,144,098.60 = 390,002.80 : x
  2. Step 2: Convert to fraction form
    763,769.20/1,144,098.60 = 390,002.80/x
  3. Step 3: Cross multiply
    763,769.20x = 1,144,098.60 × 390,002.80
  4. Step 4: Simplify right side
    763,769.20x = 446,201,657,476.08
  5. Step 5: Solve for x
    x = 446,201,657,476.08/763,769.20
  6. Step 6: Final answer
    x = 584,210.07

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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.