Home / 1,247,378-1,721,386.44-696,117.20

Finding the Fourth Proportional to 1,247,378, 1,721,386.44 and 696,117.20

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Solution

The fourth proportional to 1,247,378, 1,721,386.44 and 696,117.20 is: 960,644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,378 : 1,721,386.44 = 696,117.20 : x
  2. Step 2: Convert to fraction form
    1,247,378/1,721,386.44 = 696,117.20/x
  3. Step 3: Cross multiply
    1,247,378x = 1,721,386.44 × 696,117.20
  4. Step 4: Simplify right side
    1,247,378x = 1,198,286,708,730.77
  5. Step 5: Solve for x
    x = 1,198,286,708,730.77/1,247,378
  6. Step 6: Final answer
    x = 960,644.41

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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.