Home / 551,218.68-760,725.90-309,517.32

Finding the Fourth Proportional to 551,218.68, 760,725.90 and 309,517.32

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Solution

The fourth proportional to 551,218.68, 760,725.90 and 309,517.32 is: 427,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,218.68 : 760,725.90 = 309,517.32 : x
  2. Step 2: Convert to fraction form
    551,218.68/760,725.90 = 309,517.32/x
  3. Step 3: Cross multiply
    551,218.68x = 760,725.90 × 309,517.32
  4. Step 4: Simplify right side
    551,218.68x = 235,457,841,822.59
  5. Step 5: Solve for x
    x = 235,457,841,822.59/551,218.68
  6. Step 6: Final answer
    x = 427,158.68

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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.