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Finding the Fourth Proportional to 707,862.96, 976,836.96 and 385,569.36

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Solution

The fourth proportional to 707,862.96, 976,836.96 and 385,569.36 is: 532,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,862.96 : 976,836.96 = 385,569.36 : x
  2. Step 2: Convert to fraction form
    707,862.96/976,836.96 = 385,569.36/x
  3. Step 3: Cross multiply
    707,862.96x = 976,836.96 × 385,569.36
  4. Step 4: Simplify right side
    707,862.96x = 376,638,401,491.55
  5. Step 5: Solve for x
    x = 376,638,401,491.55/707,862.96
  6. Step 6: Final answer
    x = 532,078.13

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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.