Home / 689,741.55-1,034,656.06-216,445.59

Finding the Fourth Proportional to 689,741.55, 1,034,656.06 and 216,445.59

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Solution

The fourth proportional to 689,741.55, 1,034,656.06 and 216,445.59 is: 324,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,741.55 : 1,034,656.06 = 216,445.59 : x
  2. Step 2: Convert to fraction form
    689,741.55/1,034,656.06 = 216,445.59/x
  3. Step 3: Cross multiply
    689,741.55x = 1,034,656.06 × 216,445.59
  4. Step 4: Simplify right side
    689,741.55x = 223,946,740,812.66
  5. Step 5: Solve for x
    x = 223,946,740,812.66/689,741.55
  6. Step 6: Final answer
    x = 324,682.11

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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.