Home / 990,911.52-1,486,143.36-458,141.52

Finding the Fourth Proportional to 990,911.52, 1,486,143.36 and 458,141.52

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Solution

The fourth proportional to 990,911.52, 1,486,143.36 and 458,141.52 is: 687,108.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,911.52 : 1,486,143.36 = 458,141.52 : x
  2. Step 2: Convert to fraction form
    990,911.52/1,486,143.36 = 458,141.52/x
  3. Step 3: Cross multiply
    990,911.52x = 1,486,143.36 × 458,141.52
  4. Step 4: Simplify right side
    990,911.52x = 680,863,977,888.31
  5. Step 5: Solve for x
    x = 680,863,977,888.31/990,911.52
  6. Step 6: Final answer
    x = 687,108.75

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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.