Home / 1,231,979.07-1,700,113.20-688,122.60

Finding the Fourth Proportional to 1,231,979.07, 1,700,113.20 and 688,122.60

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Solution

The fourth proportional to 1,231,979.07, 1,700,113.20 and 688,122.60 is: 949,599.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,979.07 : 1,700,113.20 = 688,122.60 : x
  2. Step 2: Convert to fraction form
    1,231,979.07/1,700,113.20 = 688,122.60/x
  3. Step 3: Cross multiply
    1,231,979.07x = 1,700,113.20 × 688,122.60
  4. Step 4: Simplify right side
    1,231,979.07x = 1,169,886,315,478.32
  5. Step 5: Solve for x
    x = 1,169,886,315,478.32/1,231,979.07
  6. Step 6: Final answer
    x = 949,599.18

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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.