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Finding the Fourth Proportional to 647,604, 893,693.52 and 379,332

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Solution

The fourth proportional to 647,604, 893,693.52 and 379,332 is: 523,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,604 : 893,693.52 = 379,332 : x
  2. Step 2: Convert to fraction form
    647,604/893,693.52 = 379,332/x
  3. Step 3: Cross multiply
    647,604x = 893,693.52 × 379,332
  4. Step 4: Simplify right side
    647,604x = 339,006,550,328.64
  5. Step 5: Solve for x
    x = 339,006,550,328.64/647,604
  6. Step 6: Final answer
    x = 523,478.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.