Home / 990,915.50-1,486,447.37-281,000.72

Finding the Fourth Proportional to 990,915.50, 1,486,447.37 and 281,000.72

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Solution

The fourth proportional to 990,915.50, 1,486,447.37 and 281,000.72 is: 421,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,915.50 : 1,486,447.37 = 281,000.72 : x
  2. Step 2: Convert to fraction form
    990,915.50/1,486,447.37 = 281,000.72/x
  3. Step 3: Cross multiply
    990,915.50x = 1,486,447.37 × 281,000.72
  4. Step 4: Simplify right side
    990,915.50x = 417,692,781,212.11
  5. Step 5: Solve for x
    x = 417,692,781,212.11/990,915.50
  6. Step 6: Final answer
    x = 421,522.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.