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Finding the Fourth Proportional to 707,481.45, 976,275.12 and 401,564.07

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Solution

The fourth proportional to 707,481.45, 976,275.12 and 401,564.07 is: 554,130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,481.45 : 976,275.12 = 401,564.07 : x
  2. Step 2: Convert to fraction form
    707,481.45/976,275.12 = 401,564.07/x
  3. Step 3: Cross multiply
    707,481.45x = 976,275.12 × 401,564.07
  4. Step 4: Simplify right side
    707,481.45x = 392,037,010,626.94
  5. Step 5: Solve for x
    x = 392,037,010,626.94/707,481.45
  6. Step 6: Final answer
    x = 554,130.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.