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Finding the Fourth Proportional to 658,611.23, 908,877.80 and 356,804.51

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Solution

The fourth proportional to 658,611.23, 908,877.80 and 356,804.51 is: 492,387.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,611.23 : 908,877.80 = 356,804.51 : x
  2. Step 2: Convert to fraction form
    658,611.23/908,877.80 = 356,804.51/x
  3. Step 3: Cross multiply
    658,611.23x = 908,877.80 × 356,804.51
  4. Step 4: Simplify right side
    658,611.23x = 324,291,696,294.86
  5. Step 5: Solve for x
    x = 324,291,696,294.86/658,611.23
  6. Step 6: Final answer
    x = 492,387.13

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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.