Home / 763,784.70-1,145,842.32-290,479.02

Finding the Fourth Proportional to 763,784.70, 1,145,842.32 and 290,479.02

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Solution

The fourth proportional to 763,784.70, 1,145,842.32 and 290,479.02 is: 435,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,784.70 : 1,145,842.32 = 290,479.02 : x
  2. Step 2: Convert to fraction form
    763,784.70/1,145,842.32 = 290,479.02/x
  3. Step 3: Cross multiply
    763,784.70x = 1,145,842.32 × 290,479.02
  4. Step 4: Simplify right side
    763,784.70x = 332,843,154,188.13
  5. Step 5: Solve for x
    x = 332,843,154,188.13/763,784.70
  6. Step 6: Final answer
    x = 435,781.38

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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.