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Finding the Fourth Proportional to 465,555.36, 642,448.32 and 284,570.32

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Solution

The fourth proportional to 465,555.36, 642,448.32 and 284,570.32 is: 392,695.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,555.36 : 642,448.32 = 284,570.32 : x
  2. Step 2: Convert to fraction form
    465,555.36/642,448.32 = 284,570.32/x
  3. Step 3: Cross multiply
    465,555.36x = 642,448.32 × 284,570.32
  4. Step 4: Simplify right side
    465,555.36x = 182,821,724,005.86
  5. Step 5: Solve for x
    x = 182,821,724,005.86/465,555.36
  6. Step 6: Final answer
    x = 392,695.99

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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.