Home / 572,719.14-858,266.28-421,775.64

Finding the Fourth Proportional to 572,719.14, 858,266.28 and 421,775.64

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Solution

The fourth proportional to 572,719.14, 858,266.28 and 421,775.64 is: 632,065.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,719.14 : 858,266.28 = 421,775.64 : x
  2. Step 2: Convert to fraction form
    572,719.14/858,266.28 = 421,775.64/x
  3. Step 3: Cross multiply
    572,719.14x = 858,266.28 × 421,775.64
  4. Step 4: Simplify right side
    572,719.14x = 361,995,809,537.42
  5. Step 5: Solve for x
    x = 361,995,809,537.42/572,719.14
  6. Step 6: Final answer
    x = 632,065.15

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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.