Home / 921,656.40-1,382,484.60-764,192.40

Finding the Fourth Proportional to 921,656.40, 1,382,484.60 and 764,192.40

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Solution

The fourth proportional to 921,656.40, 1,382,484.60 and 764,192.40 is: 1,146,288.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,656.40 : 1,382,484.60 = 764,192.40 : x
  2. Step 2: Convert to fraction form
    921,656.40/1,382,484.60 = 764,192.40/x
  3. Step 3: Cross multiply
    921,656.40x = 1,382,484.60 × 764,192.40
  4. Step 4: Simplify right side
    921,656.40x = 1,056,484,224,437.04
  5. Step 5: Solve for x
    x = 1,056,484,224,437.04/921,656.40
  6. Step 6: Final answer
    x = 1,146,288.60

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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.