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Finding the Fourth Proportional to 554,023.46, 764,506.40 and 312,365.46

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Solution

The fourth proportional to 554,023.46, 764,506.40 and 312,365.46 is: 431,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,023.46 : 764,506.40 = 312,365.46 : x
  2. Step 2: Convert to fraction form
    554,023.46/764,506.40 = 312,365.46/x
  3. Step 3: Cross multiply
    554,023.46x = 764,506.40 × 312,365.46
  4. Step 4: Simplify right side
    554,023.46x = 238,805,393,308.94
  5. Step 5: Solve for x
    x = 238,805,393,308.94/554,023.46
  6. Step 6: Final answer
    x = 431,038.41

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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.