Home / 761,978.61-1,051,542.33-417,845.96

Finding the Fourth Proportional to 761,978.61, 1,051,542.33 and 417,845.96

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Solution

The fourth proportional to 761,978.61, 1,051,542.33 and 417,845.96 is: 576,633.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,978.61 : 1,051,542.33 = 417,845.96 : x
  2. Step 2: Convert to fraction form
    761,978.61/1,051,542.33 = 417,845.96/x
  3. Step 3: Cross multiply
    761,978.61x = 1,051,542.33 × 417,845.96
  4. Step 4: Simplify right side
    761,978.61x = 439,382,711,478.14
  5. Step 5: Solve for x
    x = 439,382,711,478.14/761,978.61
  6. Step 6: Final answer
    x = 576,633.92

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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.