Home / 1,029,590.76-1,420,343.76-685,585.32

Finding the Fourth Proportional to 1,029,590.76, 1,420,343.76 and 685,585.32

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Solution

The fourth proportional to 1,029,590.76, 1,420,343.76 and 685,585.32 is: 945,780.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,590.76 : 1,420,343.76 = 685,585.32 : x
  2. Step 2: Convert to fraction form
    1,029,590.76/1,420,343.76 = 685,585.32/x
  3. Step 3: Cross multiply
    1,029,590.76x = 1,420,343.76 × 685,585.32
  4. Step 4: Simplify right side
    1,029,590.76x = 973,766,831,209.60
  5. Step 5: Solve for x
    x = 973,766,831,209.60/1,029,590.76
  6. Step 6: Final answer
    x = 945,780.47

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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.