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Finding the Fourth Proportional to 701,334, 967,840.92 and 399,528

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Solution

The fourth proportional to 701,334, 967,840.92 and 399,528 is: 551,348.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,334 : 967,840.92 = 399,528 : x
  2. Step 2: Convert to fraction form
    701,334/967,840.92 = 399,528/x
  3. Step 3: Cross multiply
    701,334x = 967,840.92 × 399,528
  4. Step 4: Simplify right side
    701,334x = 386,679,547,085.76
  5. Step 5: Solve for x
    x = 386,679,547,085.76/701,334
  6. Step 6: Final answer
    x = 551,348.64

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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.