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Finding the Fourth Proportional to 426,797.48, 640,598.16 and 216,586.28

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Solution

The fourth proportional to 426,797.48, 640,598.16 and 216,586.28 is: 325,083.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,797.48 : 640,598.16 = 216,586.28 : x
  2. Step 2: Convert to fraction form
    426,797.48/640,598.16 = 216,586.28/x
  3. Step 3: Cross multiply
    426,797.48x = 640,598.16 × 216,586.28
  4. Step 4: Simplify right side
    426,797.48x = 138,744,772,449.25
  5. Step 5: Solve for x
    x = 138,744,772,449.25/426,797.48
  6. Step 6: Final answer
    x = 325,083.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.