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Finding the Fourth Proportional to 707,285.34, 976,075.79 and 385,016.92

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Solution

The fourth proportional to 707,285.34, 976,075.79 and 385,016.92 is: 531,335.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,285.34 : 976,075.79 = 385,016.92 : x
  2. Step 2: Convert to fraction form
    707,285.34/976,075.79 = 385,016.92/x
  3. Step 3: Cross multiply
    707,285.34x = 976,075.79 × 385,016.92
  4. Step 4: Simplify right side
    707,285.34x = 375,805,689,987.09
  5. Step 5: Solve for x
    x = 375,805,689,987.09/707,285.34
  6. Step 6: Final answer
    x = 531,335.33

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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.