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Finding the Fourth Proportional to 707,443.07, 976,120.07 and 420,907.19

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Solution

The fourth proportional to 707,443.07, 976,120.07 and 420,907.19 is: 580,761.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,443.07 : 976,120.07 = 420,907.19 : x
  2. Step 2: Convert to fraction form
    707,443.07/976,120.07 = 420,907.19/x
  3. Step 3: Cross multiply
    707,443.07x = 976,120.07 × 420,907.19
  4. Step 4: Simplify right side
    707,443.07x = 410,855,948,781.17
  5. Step 5: Solve for x
    x = 410,855,948,781.17/707,443.07
  6. Step 6: Final answer
    x = 580,761.86

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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.