Home / 1,298,230.43-1,947,405.79-399,712.42

Finding the Fourth Proportional to 1,298,230.43, 1,947,405.79 and 399,712.42

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Solution

The fourth proportional to 1,298,230.43, 1,947,405.79 and 399,712.42 is: 599,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,230.43 : 1,947,405.79 = 399,712.42 : x
  2. Step 2: Convert to fraction form
    1,298,230.43/1,947,405.79 = 399,712.42/x
  3. Step 3: Cross multiply
    1,298,230.43x = 1,947,405.79 × 399,712.42
  4. Step 4: Simplify right side
    1,298,230.43x = 778,402,271,305.88
  5. Step 5: Solve for x
    x = 778,402,271,305.88/1,298,230.43
  6. Step 6: Final answer
    x = 599,587.14

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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.