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Finding the Fourth Proportional to 617,940.80, 926,911.20 and 607,443.20

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Solution

The fourth proportional to 617,940.80, 926,911.20 and 607,443.20 is: 911,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,940.80 : 926,911.20 = 607,443.20 : x
  2. Step 2: Convert to fraction form
    617,940.80/926,911.20 = 607,443.20/x
  3. Step 3: Cross multiply
    617,940.80x = 926,911.20 × 607,443.20
  4. Step 4: Simplify right side
    617,940.80x = 563,045,905,443.84
  5. Step 5: Solve for x
    x = 563,045,905,443.84/617,940.80
  6. Step 6: Final answer
    x = 911,164.80

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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.