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Finding the Fourth Proportional to 554,043.52, 764,586.84 and 312,326.20

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Solution

The fourth proportional to 554,043.52, 764,586.84 and 312,326.20 is: 431,013.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,043.52 : 764,586.84 = 312,326.20 : x
  2. Step 2: Convert to fraction form
    554,043.52/764,586.84 = 312,326.20/x
  3. Step 3: Cross multiply
    554,043.52x = 764,586.84 × 312,326.20
  4. Step 4: Simplify right side
    554,043.52x = 238,800,502,307.21
  5. Step 5: Solve for x
    x = 238,800,502,307.21/554,043.52
  6. Step 6: Final answer
    x = 431,013.98

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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.