Home / 1,072,609.80-1,607,890.70-398,510.60

Finding the Fourth Proportional to 1,072,609.80, 1,607,890.70 and 398,510.60

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Solution

The fourth proportional to 1,072,609.80, 1,607,890.70 and 398,510.60 is: 597,385.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,609.80 : 1,607,890.70 = 398,510.60 : x
  2. Step 2: Convert to fraction form
    1,072,609.80/1,607,890.70 = 398,510.60/x
  3. Step 3: Cross multiply
    1,072,609.80x = 1,607,890.70 × 398,510.60
  4. Step 4: Simplify right side
    1,072,609.80x = 640,761,487,591.42
  5. Step 5: Solve for x
    x = 640,761,487,591.42/1,072,609.80
  6. Step 6: Final answer
    x = 597,385.45

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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.