Home / 437,538.80-656,567.40-318,911.60

Finding the Fourth Proportional to 437,538.80, 656,567.40 and 318,911.60

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Solution

The fourth proportional to 437,538.80, 656,567.40 and 318,911.60 is: 478,556.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,538.80 : 656,567.40 = 318,911.60 : x
  2. Step 2: Convert to fraction form
    437,538.80/656,567.40 = 318,911.60/x
  3. Step 3: Cross multiply
    437,538.80x = 656,567.40 × 318,911.60
  4. Step 4: Simplify right side
    437,538.80x = 209,386,960,041.84
  5. Step 5: Solve for x
    x = 209,386,960,041.84/437,538.80
  6. Step 6: Final answer
    x = 478,556.32

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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.