Home / 1,215,980.64-1,678,050-679,436.64

Finding the Fourth Proportional to 1,215,980.64, 1,678,050 and 679,436.64

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Solution

The fourth proportional to 1,215,980.64, 1,678,050 and 679,436.64 is: 937,620.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,980.64 : 1,678,050 = 679,436.64 : x
  2. Step 2: Convert to fraction form
    1,215,980.64/1,678,050 = 679,436.64/x
  3. Step 3: Cross multiply
    1,215,980.64x = 1,678,050 × 679,436.64
  4. Step 4: Simplify right side
    1,215,980.64x = 1,140,128,653,752
  5. Step 5: Solve for x
    x = 1,140,128,653,752/1,215,980.64
  6. Step 6: Final answer
    x = 937,620.73

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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.