Home / 1,261,089.10-1,740,344.97-688,160.71

Finding the Fourth Proportional to 1,261,089.10, 1,740,344.97 and 688,160.71

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Solution

The fourth proportional to 1,261,089.10, 1,740,344.97 and 688,160.71 is: 949,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,089.10 : 1,740,344.97 = 688,160.71 : x
  2. Step 2: Convert to fraction form
    1,261,089.10/1,740,344.97 = 688,160.71/x
  3. Step 3: Cross multiply
    1,261,089.10x = 1,740,344.97 × 688,160.71
  4. Step 4: Simplify right side
    1,261,089.10x = 1,197,637,030,200.13
  5. Step 5: Solve for x
    x = 1,197,637,030,200.13/1,261,089.10
  6. Step 6: Final answer
    x = 949,684.71

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Double scale
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1.5x scale

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.