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Finding the Fourth Proportional to 681,612.36, 940,666.16 and 375,688.32

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Solution

The fourth proportional to 681,612.36, 940,666.16 and 375,688.32 is: 518,472.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,612.36 : 940,666.16 = 375,688.32 : x
  2. Step 2: Convert to fraction form
    681,612.36/940,666.16 = 375,688.32/x
  3. Step 3: Cross multiply
    681,612.36x = 940,666.16 × 375,688.32
  4. Step 4: Simplify right side
    681,612.36x = 353,397,289,331.25
  5. Step 5: Solve for x
    x = 353,397,289,331.25/681,612.36
  6. Step 6: Final answer
    x = 518,472.54

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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.