Home / 516,020.89-712,132.46-286,579.22

Finding the Fourth Proportional to 516,020.89, 712,132.46 and 286,579.22

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Solution

The fourth proportional to 516,020.89, 712,132.46 and 286,579.22 is: 395,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,020.89 : 712,132.46 = 286,579.22 : x
  2. Step 2: Convert to fraction form
    516,020.89/712,132.46 = 286,579.22/x
  3. Step 3: Cross multiply
    516,020.89x = 712,132.46 × 286,579.22
  4. Step 4: Simplify right side
    516,020.89x = 204,082,367,420.26
  5. Step 5: Solve for x
    x = 204,082,367,420.26/516,020.89
  6. Step 6: Final answer
    x = 395,492.45

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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.