Home / 1,247,572.84-1,721,660.80-688,785.20

Finding the Fourth Proportional to 1,247,572.84, 1,721,660.80 and 688,785.20

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Solution

The fourth proportional to 1,247,572.84, 1,721,660.80 and 688,785.20 is: 950,529.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,572.84 : 1,721,660.80 = 688,785.20 : x
  2. Step 2: Convert to fraction form
    1,247,572.84/1,721,660.80 = 688,785.20/x
  3. Step 3: Cross multiply
    1,247,572.84x = 1,721,660.80 × 688,785.20
  4. Step 4: Simplify right side
    1,247,572.84x = 1,185,854,478,460.16
  5. Step 5: Solve for x
    x = 1,185,854,478,460.16/1,247,572.84
  6. Step 6: Final answer
    x = 950,529.25

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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.