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Finding the Fourth Proportional to 617,940.30, 926,910.45 and 607,442.70

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Solution

The fourth proportional to 617,940.30, 926,910.45 and 607,442.70 is: 911,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,940.30 : 926,910.45 = 607,442.70 : x
  2. Step 2: Convert to fraction form
    617,940.30/926,910.45 = 607,442.70/x
  3. Step 3: Cross multiply
    617,940.30x = 926,910.45 × 607,442.70
  4. Step 4: Simplify right side
    617,940.30x = 563,044,986,406.22
  5. Step 5: Solve for x
    x = 563,044,986,406.22/617,940.30
  6. Step 6: Final answer
    x = 911,164.05

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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.