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Finding the Fourth Proportional to 678,335.76, 936,056.52 and 376,506

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Solution

The fourth proportional to 678,335.76, 936,056.52 and 376,506 is: 519,552.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,335.76 : 936,056.52 = 376,506 : x
  2. Step 2: Convert to fraction form
    678,335.76/936,056.52 = 376,506/x
  3. Step 3: Cross multiply
    678,335.76x = 936,056.52 × 376,506
  4. Step 4: Simplify right side
    678,335.76x = 352,430,896,119.12
  5. Step 5: Solve for x
    x = 352,430,896,119.12/678,335.76
  6. Step 6: Final answer
    x = 519,552.29

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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.