Home / 1,338,693.72-2,008,041.30-840,407.64

Finding the Fourth Proportional to 1,338,693.72, 2,008,041.30 and 840,407.64

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Solution

The fourth proportional to 1,338,693.72, 2,008,041.30 and 840,407.64 is: 1,260,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,693.72 : 2,008,041.30 = 840,407.64 : x
  2. Step 2: Convert to fraction form
    1,338,693.72/2,008,041.30 = 840,407.64/x
  3. Step 3: Cross multiply
    1,338,693.72x = 2,008,041.30 × 840,407.64
  4. Step 4: Simplify right side
    1,338,693.72x = 1,687,573,249,955.53
  5. Step 5: Solve for x
    x = 1,687,573,249,955.53/1,338,693.72
  6. Step 6: Final answer
    x = 1,260,611.91

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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.