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Finding the Fourth Proportional to 518,783.44, 716,254.35 and 325,456.21

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Solution

The fourth proportional to 518,783.44, 716,254.35 and 325,456.21 is: 449,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,783.44 : 716,254.35 = 325,456.21 : x
  2. Step 2: Convert to fraction form
    518,783.44/716,254.35 = 325,456.21/x
  3. Step 3: Cross multiply
    518,783.44x = 716,254.35 × 325,456.21
  4. Step 4: Simplify right side
    518,783.44x = 233,109,426,147.01
  5. Step 5: Solve for x
    x = 233,109,426,147.01/518,783.44
  6. Step 6: Final answer
    x = 449,338.60

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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.