Home / 778,530.40-1,166,920.80-399,304.60

Finding the Fourth Proportional to 778,530.40, 1,166,920.80 and 399,304.60

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Solution

The fourth proportional to 778,530.40, 1,166,920.80 and 399,304.60 is: 598,508.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,530.40 : 1,166,920.80 = 399,304.60 : x
  2. Step 2: Convert to fraction form
    778,530.40/1,166,920.80 = 399,304.60/x
  3. Step 3: Cross multiply
    778,530.40x = 1,166,920.80 × 399,304.60
  4. Step 4: Simplify right side
    778,530.40x = 465,956,843,275.68
  5. Step 5: Solve for x
    x = 465,956,843,275.68/778,530.40
  6. Step 6: Final answer
    x = 598,508.22

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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.