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Finding the Fourth Proportional to 639,069,644.40, 958,604,466.60 and 275,564,000.40

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Solution

The fourth proportional to 639,069,644.40, 958,604,466.60 and 275,564,000.40 is: 413,346,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,069,644.40 : 958,604,466.60 = 275,564,000.40 : x
  2. Step 2: Convert to fraction form
    639,069,644.40/958,604,466.60 = 275,564,000.40/x
  3. Step 3: Cross multiply
    639,069,644.40x = 958,604,466.60 × 275,564,000.40
  4. Step 4: Simplify right side
    639,069,644.40x = 264,156,881,617,604,160
  5. Step 5: Solve for x
    x = 264,156,881,617,604,160/639,069,644.40
  6. Step 6: Final answer
    x = 413,346,000.60

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Similar ratio
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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.