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Finding the Fourth Proportional to 707,424.88, 976,894.76 and 449,385

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Solution

The fourth proportional to 707,424.88, 976,894.76 and 449,385 is: 620,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,424.88 : 976,894.76 = 449,385 : x
  2. Step 2: Convert to fraction form
    707,424.88/976,894.76 = 449,385/x
  3. Step 3: Cross multiply
    707,424.88x = 976,894.76 × 449,385
  4. Step 4: Simplify right side
    707,424.88x = 439,001,851,722.60
  5. Step 5: Solve for x
    x = 439,001,851,722.60/707,424.88
  6. Step 6: Final answer
    x = 620,563.21

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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.