Home / 690,060.74-1,035,031.64-420,118.98

Finding the Fourth Proportional to 690,060.74, 1,035,031.64 and 420,118.98

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Solution

The fourth proportional to 690,060.74, 1,035,031.64 and 420,118.98 is: 630,142.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,060.74 : 1,035,031.64 = 420,118.98 : x
  2. Step 2: Convert to fraction form
    690,060.74/1,035,031.64 = 420,118.98/x
  3. Step 3: Cross multiply
    690,060.74x = 1,035,031.64 × 420,118.98
  4. Step 4: Simplify right side
    690,060.74x = 434,836,430,882.56
  5. Step 5: Solve for x
    x = 434,836,430,882.56/690,060.74
  6. Step 6: Final answer
    x = 630,142.26

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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.