Home / 1,223,556.98-1,688,507.74-679,743.63

Finding the Fourth Proportional to 1,223,556.98, 1,688,507.74 and 679,743.63

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Solution

The fourth proportional to 1,223,556.98, 1,688,507.74 and 679,743.63 is: 938,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,556.98 : 1,688,507.74 = 679,743.63 : x
  2. Step 2: Convert to fraction form
    1,223,556.98/1,688,507.74 = 679,743.63/x
  3. Step 3: Cross multiply
    1,223,556.98x = 1,688,507.74 × 679,743.63
  4. Step 4: Simplify right side
    1,223,556.98x = 1,147,752,387,652.28
  5. Step 5: Solve for x
    x = 1,147,752,387,652.28/1,223,556.98
  6. Step 6: Final answer
    x = 938,045.72

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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.