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Finding the Fourth Proportional to 645,643.70, 967,851.15 and 503,410.10

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Solution

The fourth proportional to 645,643.70, 967,851.15 and 503,410.10 is: 754,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,643.70 : 967,851.15 = 503,410.10 : x
  2. Step 2: Convert to fraction form
    645,643.70/967,851.15 = 503,410.10/x
  3. Step 3: Cross multiply
    645,643.70x = 967,851.15 × 503,410.10
  4. Step 4: Simplify right side
    645,643.70x = 487,226,044,206.62
  5. Step 5: Solve for x
    x = 487,226,044,206.62/645,643.70
  6. Step 6: Final answer
    x = 754,636.10

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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.