Home / 570,387.07-856,421.69-318,160.36

Finding the Fourth Proportional to 570,387.07, 856,421.69 and 318,160.36

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Solution

The fourth proportional to 570,387.07, 856,421.69 and 318,160.36 is: 477,709.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,387.07 : 856,421.69 = 318,160.36 : x
  2. Step 2: Convert to fraction form
    570,387.07/856,421.69 = 318,160.36/x
  3. Step 3: Cross multiply
    570,387.07x = 856,421.69 × 318,160.36
  4. Step 4: Simplify right side
    570,387.07x = 272,479,433,202.21
  5. Step 5: Solve for x
    x = 272,479,433,202.21/570,387.07
  6. Step 6: Final answer
    x = 477,709.69

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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.