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Finding the Fourth Proportional to 1,281,848.32, 1,921,090.56 and 943,304.32

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Solution

The fourth proportional to 1,281,848.32, 1,921,090.56 and 943,304.32 is: 1,413,718.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,848.32 : 1,921,090.56 = 943,304.32 : x
  2. Step 2: Convert to fraction form
    1,281,848.32/1,921,090.56 = 943,304.32/x
  3. Step 3: Cross multiply
    1,281,848.32x = 1,921,090.56 × 943,304.32
  4. Step 4: Simplify right side
    1,281,848.32x = 1,812,173,024,359.22
  5. Step 5: Solve for x
    x = 1,812,173,024,359.22/1,281,848.32
  6. Step 6: Final answer
    x = 1,413,718.77

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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.