Home / 527,515.47-727,928.27-309,701.21

Finding the Fourth Proportional to 527,515.47, 727,928.27 and 309,701.21

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Solution

The fourth proportional to 527,515.47, 727,928.27 and 309,701.21 is: 427,362.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,515.47 : 727,928.27 = 309,701.21 : x
  2. Step 2: Convert to fraction form
    527,515.47/727,928.27 = 309,701.21/x
  3. Step 3: Cross multiply
    527,515.47x = 727,928.27 × 309,701.21
  4. Step 4: Simplify right side
    527,515.47x = 225,440,261,985.44
  5. Step 5: Solve for x
    x = 225,440,261,985.44/527,515.47
  6. Step 6: Final answer
    x = 427,362.37

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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.