Home / 1,438,136.63-2,156,831.63-427,020.92

Finding the Fourth Proportional to 1,438,136.63, 2,156,831.63 and 427,020.92

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Solution

The fourth proportional to 1,438,136.63, 2,156,831.63 and 427,020.92 is: 640,420.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,136.63 : 2,156,831.63 = 427,020.92 : x
  2. Step 2: Convert to fraction form
    1,438,136.63/2,156,831.63 = 427,020.92/x
  3. Step 3: Cross multiply
    1,438,136.63x = 2,156,831.63 × 427,020.92
  4. Step 4: Simplify right side
    1,438,136.63x = 921,012,226,927.70
  5. Step 5: Solve for x
    x = 921,012,226,927.70/1,438,136.63
  6. Step 6: Final answer
    x = 640,420.53

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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.