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Finding the Fourth Proportional to 554,258.97, 764,877.53 and 312,541.61

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Solution

The fourth proportional to 554,258.97, 764,877.53 and 312,541.61 is: 431,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,258.97 : 764,877.53 = 312,541.61 : x
  2. Step 2: Convert to fraction form
    554,258.97/764,877.53 = 312,541.61/x
  3. Step 3: Cross multiply
    554,258.97x = 764,877.53 × 312,541.61
  4. Step 4: Simplify right side
    554,258.97x = 239,056,051,635.99
  5. Step 5: Solve for x
    x = 239,056,051,635.99/554,258.97
  6. Step 6: Final answer
    x = 431,307.50

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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.