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Finding the Fourth Proportional to 678,544.32, 936,392.04 and 372,640.48

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Solution

The fourth proportional to 678,544.32, 936,392.04 and 372,640.48 is: 514,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,544.32 : 936,392.04 = 372,640.48 : x
  2. Step 2: Convert to fraction form
    678,544.32/936,392.04 = 372,640.48/x
  3. Step 3: Cross multiply
    678,544.32x = 936,392.04 × 372,640.48
  4. Step 4: Simplify right side
    678,544.32x = 348,937,579,253.78
  5. Step 5: Solve for x
    x = 348,937,579,253.78/678,544.32
  6. Step 6: Final answer
    x = 514,244.34

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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.