Home / 1,857,810.71-2,786,047.47-643,057.28

Finding the Fourth Proportional to 1,857,810.71, 2,786,047.47 and 643,057.28

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Solution

The fourth proportional to 1,857,810.71, 2,786,047.47 and 643,057.28 is: 964,354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857,810.71 : 2,786,047.47 = 643,057.28 : x
  2. Step 2: Convert to fraction form
    1,857,810.71/2,786,047.47 = 643,057.28/x
  3. Step 3: Cross multiply
    1,857,810.71x = 2,786,047.47 × 643,057.28
  4. Step 4: Simplify right side
    1,857,810.71x = 1,791,588,094,078.84
  5. Step 5: Solve for x
    x = 1,791,588,094,078.84/1,857,810.71
  6. Step 6: Final answer
    x = 964,354.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.