Home / 638,678.13-881,335.58-366,554.51

Finding the Fourth Proportional to 638,678.13, 881,335.58 and 366,554.51

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Solution

The fourth proportional to 638,678.13, 881,335.58 and 366,554.51 is: 505,822.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,678.13 : 881,335.58 = 366,554.51 : x
  2. Step 2: Convert to fraction form
    638,678.13/881,335.58 = 366,554.51/x
  3. Step 3: Cross multiply
    638,678.13x = 881,335.58 × 366,554.51
  4. Step 4: Simplify right side
    638,678.13x = 323,057,531,672.47
  5. Step 5: Solve for x
    x = 323,057,531,672.47/638,678.13
  6. Step 6: Final answer
    x = 505,822.13

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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.