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Finding the Fourth Proportional to 519,426.20, 716,805.42 and 289,970.12

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Solution

The fourth proportional to 519,426.20, 716,805.42 and 289,970.12 is: 400,157.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,426.20 : 716,805.42 = 289,970.12 : x
  2. Step 2: Convert to fraction form
    519,426.20/716,805.42 = 289,970.12/x
  3. Step 3: Cross multiply
    519,426.20x = 716,805.42 × 289,970.12
  4. Step 4: Simplify right side
    519,426.20x = 207,852,153,654.05
  5. Step 5: Solve for x
    x = 207,852,153,654.05/519,426.20
  6. Step 6: Final answer
    x = 400,157.24

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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.