Home / 859,683.11-1,289,445.60-290,999.21

Finding the Fourth Proportional to 859,683.11, 1,289,445.60 and 290,999.21

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Solution

The fourth proportional to 859,683.11, 1,289,445.60 and 290,999.21 is: 436,472.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,683.11 : 1,289,445.60 = 290,999.21 : x
  2. Step 2: Convert to fraction form
    859,683.11/1,289,445.60 = 290,999.21/x
  3. Step 3: Cross multiply
    859,683.11x = 1,289,445.60 × 290,999.21
  4. Step 4: Simplify right side
    859,683.11x = 375,227,650,937.98
  5. Step 5: Solve for x
    x = 375,227,650,937.98/859,683.11
  6. Step 6: Final answer
    x = 436,472.05

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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.