Home / 629,266-868,715.40-489,254.14

Finding the Fourth Proportional to 629,266, 868,715.40 and 489,254.14

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Solution

The fourth proportional to 629,266, 868,715.40 and 489,254.14 is: 675,425.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,266 : 868,715.40 = 489,254.14 : x
  2. Step 2: Convert to fraction form
    629,266/868,715.40 = 489,254.14/x
  3. Step 3: Cross multiply
    629,266x = 868,715.40 × 489,254.14
  4. Step 4: Simplify right side
    629,266x = 425,022,605,931.76
  5. Step 5: Solve for x
    x = 425,022,605,931.76/629,266
  6. Step 6: Final answer
    x = 675,425.98

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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.