Home / 1,231,980.51-1,700,115.18-688,124.03

Finding the Fourth Proportional to 1,231,980.51, 1,700,115.18 and 688,124.03

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Solution

The fourth proportional to 1,231,980.51, 1,700,115.18 and 688,124.03 is: 949,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,980.51 : 1,700,115.18 = 688,124.03 : x
  2. Step 2: Convert to fraction form
    1,231,980.51/1,700,115.18 = 688,124.03/x
  3. Step 3: Cross multiply
    1,231,980.51x = 1,700,115.18 × 688,124.03
  4. Step 4: Simplify right side
    1,231,980.51x = 1,169,890,109,125.78
  5. Step 5: Solve for x
    x = 1,169,890,109,125.78/1,231,980.51
  6. Step 6: Final answer
    x = 949,601.15

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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.