Home / 516,580.16-712,887.40-312,628.64

Finding the Fourth Proportional to 516,580.16, 712,887.40 and 312,628.64

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Solution

The fourth proportional to 516,580.16, 712,887.40 and 312,628.64 is: 431,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,580.16 : 712,887.40 = 312,628.64 : x
  2. Step 2: Convert to fraction form
    516,580.16/712,887.40 = 312,628.64/x
  3. Step 3: Cross multiply
    516,580.16x = 712,887.40 × 312,628.64
  4. Step 4: Simplify right side
    516,580.16x = 222,869,018,335.14
  5. Step 5: Solve for x
    x = 222,869,018,335.14/516,580.16
  6. Step 6: Final answer
    x = 431,431.63

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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.