Home / 1,205,688.16-1,663,853.28-661,879.68

Finding the Fourth Proportional to 1,205,688.16, 1,663,853.28 and 661,879.68

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Solution

The fourth proportional to 1,205,688.16, 1,663,853.28 and 661,879.68 is: 913,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,688.16 : 1,663,853.28 = 661,879.68 : x
  2. Step 2: Convert to fraction form
    1,205,688.16/1,663,853.28 = 661,879.68/x
  3. Step 3: Cross multiply
    1,205,688.16x = 1,663,853.28 × 661,879.68
  4. Step 4: Simplify right side
    1,205,688.16x = 1,101,270,676,533.35
  5. Step 5: Solve for x
    x = 1,101,270,676,533.35/1,205,688.16
  6. Step 6: Final answer
    x = 913,395.95

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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.