Home / 763,460.68-1,145,325.18-290,187.40

Finding the Fourth Proportional to 763,460.68, 1,145,325.18 and 290,187.40

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Solution

The fourth proportional to 763,460.68, 1,145,325.18 and 290,187.40 is: 435,332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,460.68 : 1,145,325.18 = 290,187.40 : x
  2. Step 2: Convert to fraction form
    763,460.68/1,145,325.18 = 290,187.40/x
  3. Step 3: Cross multiply
    763,460.68x = 1,145,325.18 × 290,187.40
  4. Step 4: Simplify right side
    763,460.68x = 332,358,936,138.73
  5. Step 5: Solve for x
    x = 332,358,936,138.73/763,460.68
  6. Step 6: Final answer
    x = 435,332.09

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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.