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Finding the Fourth Proportional to 453,509,679.20, 636,122,874.40 and 453,509,679.20

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Solution

The fourth proportional to 453,509,679.20, 636,122,874.40 and 453,509,679.20 is: 636,122,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,509,679.20 : 636,122,874.40 = 453,509,679.20 : x
  2. Step 2: Convert to fraction form
    453,509,679.20/636,122,874.40 = 453,509,679.20/x
  3. Step 3: Cross multiply
    453,509,679.20x = 636,122,874.40 × 453,509,679.20
  4. Step 4: Simplify right side
    453,509,679.20x = 288,487,880,700,925,888
  5. Step 5: Solve for x
    x = 288,487,880,700,925,888/453,509,679.20
  6. Step 6: Final answer
    x = 636,122,874.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.