Home / 1,223,551.32-1,688,453.88-679,721.31

Finding the Fourth Proportional to 1,223,551.32, 1,688,453.88 and 679,721.31

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Solution

The fourth proportional to 1,223,551.32, 1,688,453.88 and 679,721.31 is: 937,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,551.32 : 1,688,453.88 = 679,721.31 : x
  2. Step 2: Convert to fraction form
    1,223,551.32/1,688,453.88 = 679,721.31/x
  3. Step 3: Cross multiply
    1,223,551.32x = 1,688,453.88 × 679,721.31
  4. Step 4: Simplify right side
    1,223,551.32x = 1,147,678,083,188.18
  5. Step 5: Solve for x
    x = 1,147,678,083,188.18/1,223,551.32
  6. Step 6: Final answer
    x = 937,989.33

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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.