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Finding the Fourth Proportional to 672,156.84, 927,285 and 400,072.17

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Solution

The fourth proportional to 672,156.84, 927,285 and 400,072.17 is: 551,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,156.84 : 927,285 = 400,072.17 : x
  2. Step 2: Convert to fraction form
    672,156.84/927,285 = 400,072.17/x
  3. Step 3: Cross multiply
    672,156.84x = 927,285 × 400,072.17
  4. Step 4: Simplify right side
    672,156.84x = 370,980,922,158.45
  5. Step 5: Solve for x
    x = 370,980,922,158.45/672,156.84
  6. Step 6: Final answer
    x = 551,926.13

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1.5x scale

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.