Home / 711,128.74-1,066,694.13-290,404.61

Finding the Fourth Proportional to 711,128.74, 1,066,694.13 and 290,404.61

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Solution

The fourth proportional to 711,128.74, 1,066,694.13 and 290,404.61 is: 435,607.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,128.74 : 1,066,694.13 = 290,404.61 : x
  2. Step 2: Convert to fraction form
    711,128.74/1,066,694.13 = 290,404.61/x
  3. Step 3: Cross multiply
    711,128.74x = 1,066,694.13 × 290,404.61
  4. Step 4: Simplify right side
    711,128.74x = 309,772,891,359.92
  5. Step 5: Solve for x
    x = 309,772,891,359.92/711,128.74
  6. Step 6: Final answer
    x = 435,607.33

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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.