Home / 1,440,639.93-1,988,456.55-828,855.36

Finding the Fourth Proportional to 1,440,639.93, 1,988,456.55 and 828,855.36

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Solution

The fourth proportional to 1,440,639.93, 1,988,456.55 and 828,855.36 is: 1,144,035.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,639.93 : 1,988,456.55 = 828,855.36 : x
  2. Step 2: Convert to fraction form
    1,440,639.93/1,988,456.55 = 828,855.36/x
  3. Step 3: Cross multiply
    1,440,639.93x = 1,988,456.55 × 828,855.36
  4. Step 4: Simplify right side
    1,440,639.93x = 1,648,142,869,594.61
  5. Step 5: Solve for x
    x = 1,648,142,869,594.61/1,440,639.93
  6. Step 6: Final answer
    x = 1,144,035.25

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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.