Home / 761,639.60-1,051,062.62-422,129.72

Finding the Fourth Proportional to 761,639.60, 1,051,062.62 and 422,129.72

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Solution

The fourth proportional to 761,639.60, 1,051,062.62 and 422,129.72 is: 582,539.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,639.60 : 1,051,062.62 = 422,129.72 : x
  2. Step 2: Convert to fraction form
    761,639.60/1,051,062.62 = 422,129.72/x
  3. Step 3: Cross multiply
    761,639.60x = 1,051,062.62 × 422,129.72
  4. Step 4: Simplify right side
    761,639.60x = 443,684,769,483.07
  5. Step 5: Solve for x
    x = 443,684,769,483.07/761,639.60
  6. Step 6: Final answer
    x = 582,539.00

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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.