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Finding the Fourth Proportional to 661,618.08, 913,240.88 and 375,328.48

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Solution

The fourth proportional to 661,618.08, 913,240.88 and 375,328.48 is: 518,071.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,618.08 : 913,240.88 = 375,328.48 : x
  2. Step 2: Convert to fraction form
    661,618.08/913,240.88 = 375,328.48/x
  3. Step 3: Cross multiply
    661,618.08x = 913,240.88 × 375,328.48
  4. Step 4: Simplify right side
    661,618.08x = 342,765,311,364.26
  5. Step 5: Solve for x
    x = 342,765,311,364.26/661,618.08
  6. Step 6: Final answer
    x = 518,071.26

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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.