Home / 1,185,621.39-1,778,715-386,904.42

Finding the Fourth Proportional to 1,185,621.39, 1,778,715 and 386,904.42

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Solution

The fourth proportional to 1,185,621.39, 1,778,715 and 386,904.42 is: 580,448.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,621.39 : 1,778,715 = 386,904.42 : x
  2. Step 2: Convert to fraction form
    1,185,621.39/1,778,715 = 386,904.42/x
  3. Step 3: Cross multiply
    1,185,621.39x = 1,778,715 × 386,904.42
  4. Step 4: Simplify right side
    1,185,621.39x = 688,192,695,420.30
  5. Step 5: Solve for x
    x = 688,192,695,420.30/1,185,621.39
  6. Step 6: Final answer
    x = 580,448.95

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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.