Home / 761,939.55-1,143,147.51-458,665.83

Finding the Fourth Proportional to 761,939.55, 1,143,147.51 and 458,665.83

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Solution

The fourth proportional to 761,939.55, 1,143,147.51 and 458,665.83 is: 688,142.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,939.55 : 1,143,147.51 = 458,665.83 : x
  2. Step 2: Convert to fraction form
    761,939.55/1,143,147.51 = 458,665.83/x
  3. Step 3: Cross multiply
    761,939.55x = 1,143,147.51 × 458,665.83
  4. Step 4: Simplify right side
    761,939.55x = 524,322,701,486.58
  5. Step 5: Solve for x
    x = 524,322,701,486.58/761,939.55
  6. Step 6: Final answer
    x = 688,142.13

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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.