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Finding the Fourth Proportional to 707,419.89, 976,259.88 and 385,135.47

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Solution

The fourth proportional to 707,419.89, 976,259.88 and 385,135.47 is: 531,498.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,419.89 : 976,259.88 = 385,135.47 : x
  2. Step 2: Convert to fraction form
    707,419.89/976,259.88 = 385,135.47/x
  3. Step 3: Cross multiply
    707,419.89x = 976,259.88 × 385,135.47
  4. Step 4: Simplify right side
    707,419.89x = 375,992,307,725.94
  5. Step 5: Solve for x
    x = 375,992,307,725.94/707,419.89
  6. Step 6: Final answer
    x = 531,498.07

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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.