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Finding the Fourth Proportional to 554,368.34, 764,982.48 and 312,710.30

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Solution

The fourth proportional to 554,368.34, 764,982.48 and 312,710.30 is: 431,514.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,368.34 : 764,982.48 = 312,710.30 : x
  2. Step 2: Convert to fraction form
    554,368.34/764,982.48 = 312,710.30/x
  3. Step 3: Cross multiply
    554,368.34x = 764,982.48 × 312,710.30
  4. Step 4: Simplify right side
    554,368.34x = 239,217,900,815.54
  5. Step 5: Solve for x
    x = 239,217,900,815.54/554,368.34
  6. Step 6: Final answer
    x = 431,514.37

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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.