Home / 1,185,530.48-1,778,480.92-386,626.20

Finding the Fourth Proportional to 1,185,530.48, 1,778,480.92 and 386,626.20

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Solution

The fourth proportional to 1,185,530.48, 1,778,480.92 and 386,626.20 is: 579,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,530.48 : 1,778,480.92 = 386,626.20 : x
  2. Step 2: Convert to fraction form
    1,185,530.48/1,778,480.92 = 386,626.20/x
  3. Step 3: Cross multiply
    1,185,530.48x = 1,778,480.92 × 386,626.20
  4. Step 4: Simplify right side
    1,185,530.48x = 687,607,319,872.10
  5. Step 5: Solve for x
    x = 687,607,319,872.10/1,185,530.48
  6. Step 6: Final answer
    x = 579,999.70

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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.