Home / 809,265.90-1,116,101.31-486,915.77

Finding the Fourth Proportional to 809,265.90, 1,116,101.31 and 486,915.77

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Solution

The fourth proportional to 809,265.90, 1,116,101.31 and 486,915.77 is: 671,531.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,265.90 : 1,116,101.31 = 486,915.77 : x
  2. Step 2: Convert to fraction form
    809,265.90/1,116,101.31 = 486,915.77/x
  3. Step 3: Cross multiply
    809,265.90x = 1,116,101.31 × 486,915.77
  4. Step 4: Simplify right side
    809,265.90x = 543,447,323,176.15
  5. Step 5: Solve for x
    x = 543,447,323,176.15/809,265.90
  6. Step 6: Final answer
    x = 671,531.23

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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.