Home / 1,186,390.77-1,637,210.01-642,513.97

Finding the Fourth Proportional to 1,186,390.77, 1,637,210.01 and 642,513.97

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Solution

The fourth proportional to 1,186,390.77, 1,637,210.01 and 642,513.97 is: 886,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,390.77 : 1,637,210.01 = 642,513.97 : x
  2. Step 2: Convert to fraction form
    1,186,390.77/1,637,210.01 = 642,513.97/x
  3. Step 3: Cross multiply
    1,186,390.77x = 1,637,210.01 × 642,513.97
  4. Step 4: Simplify right side
    1,186,390.77x = 1,051,930,303,248.84
  5. Step 5: Solve for x
    x = 1,051,930,303,248.84/1,186,390.77
  6. Step 6: Final answer
    x = 886,664.27

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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.