Home / 921,472.40-1,382,208.60-764,008.40

Finding the Fourth Proportional to 921,472.40, 1,382,208.60 and 764,008.40

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Solution

The fourth proportional to 921,472.40, 1,382,208.60 and 764,008.40 is: 1,146,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,472.40 : 1,382,208.60 = 764,008.40 : x
  2. Step 2: Convert to fraction form
    921,472.40/1,382,208.60 = 764,008.40/x
  3. Step 3: Cross multiply
    921,472.40x = 1,382,208.60 × 764,008.40
  4. Step 4: Simplify right side
    921,472.40x = 1,056,018,980,952.24
  5. Step 5: Solve for x
    x = 1,056,018,980,952.24/921,472.40
  6. Step 6: Final answer
    x = 1,146,012.60

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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.