Home / 1,223,279.19-1,688,125.37-679,465.60

Finding the Fourth Proportional to 1,223,279.19, 1,688,125.37 and 679,465.60

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Solution

The fourth proportional to 1,223,279.19, 1,688,125.37 and 679,465.60 is: 937,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,279.19 : 1,688,125.37 = 679,465.60 : x
  2. Step 2: Convert to fraction form
    1,223,279.19/1,688,125.37 = 679,465.60/x
  3. Step 3: Cross multiply
    1,223,279.19x = 1,688,125.37 × 679,465.60
  4. Step 4: Simplify right side
    1,223,279.19x = 1,147,023,109,784.63
  5. Step 5: Solve for x
    x = 1,147,023,109,784.63/1,223,279.19
  6. Step 6: Final answer
    x = 937,662.57

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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.