Home / 689,989.67-1,034,925.21-420,047.74

Finding the Fourth Proportional to 689,989.67, 1,034,925.21 and 420,047.74

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Solution

The fourth proportional to 689,989.67, 1,034,925.21 and 420,047.74 is: 630,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,989.67 : 1,034,925.21 = 420,047.74 : x
  2. Step 2: Convert to fraction form
    689,989.67/1,034,925.21 = 420,047.74/x
  3. Step 3: Cross multiply
    689,989.67x = 1,034,925.21 × 420,047.74
  4. Step 4: Simplify right side
    689,989.67x = 434,717,993,954.35
  5. Step 5: Solve for x
    x = 434,717,993,954.35/689,989.67
  6. Step 6: Final answer
    x = 630,035.52

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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.