Home / 1,230,190.39-1,697,663.80-686,326.30

Finding the Fourth Proportional to 1,230,190.39, 1,697,663.80 and 686,326.30

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Solution

The fourth proportional to 1,230,190.39, 1,697,663.80 and 686,326.30 is: 947,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,190.39 : 1,697,663.80 = 686,326.30 : x
  2. Step 2: Convert to fraction form
    1,230,190.39/1,697,663.80 = 686,326.30/x
  3. Step 3: Cross multiply
    1,230,190.39x = 1,697,663.80 × 686,326.30
  4. Step 4: Simplify right side
    1,230,190.39x = 1,165,151,311,111.69
  5. Step 5: Solve for x
    x = 1,165,151,311,111.69/1,230,190.39
  6. Step 6: Final answer
    x = 947,130.88

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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.