Home / 471,427.02-649,814.00-318,417.21

Finding the Fourth Proportional to 471,427.02, 649,814.00 and 318,417.21

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Solution

The fourth proportional to 471,427.02, 649,814.00 and 318,417.21 is: 438,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,427.02 : 649,814.00 = 318,417.21 : x
  2. Step 2: Convert to fraction form
    471,427.02/649,814.00 = 318,417.21/x
  3. Step 3: Cross multiply
    471,427.02x = 649,814.00 × 318,417.21
  4. Step 4: Simplify right side
    471,427.02x = 206,911,959,306.85
  5. Step 5: Solve for x
    x = 206,911,959,306.85/471,427.02
  6. Step 6: Final answer
    x = 438,905.60

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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.