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Finding the Fourth Proportional to 908,237.09, 1,254,641.99 and 860,407.40

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Solution

The fourth proportional to 908,237.09, 1,254,641.99 and 860,407.40 is: 1,188,569.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,237.09 : 1,254,641.99 = 860,407.40 : x
  2. Step 2: Convert to fraction form
    908,237.09/1,254,641.99 = 860,407.40/x
  3. Step 3: Cross multiply
    908,237.09x = 1,254,641.99 × 860,407.40
  4. Step 4: Simplify right side
    908,237.09x = 1,079,503,249,163.72
  5. Step 5: Solve for x
    x = 1,079,503,249,163.72/908,237.09
  6. Step 6: Final answer
    x = 1,188,569.88

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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.