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Finding the Fourth Proportional to 678,902.24, 936,901.59 and 372,998.43

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Solution

The fourth proportional to 678,902.24, 936,901.59 and 372,998.43 is: 514,746.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,902.24 : 936,901.59 = 372,998.43 : x
  2. Step 2: Convert to fraction form
    678,902.24/936,901.59 = 372,998.43/x
  3. Step 3: Cross multiply
    678,902.24x = 936,901.59 × 372,998.43
  4. Step 4: Simplify right side
    678,902.24x = 349,462,822,134.50
  5. Step 5: Solve for x
    x = 349,462,822,134.50/678,902.24
  6. Step 6: Final answer
    x = 514,746.90

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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.