Home / 1,298,399.12-1,947,506.40-399,747.15

Finding the Fourth Proportional to 1,298,399.12, 1,947,506.40 and 399,747.15

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Solution

The fourth proportional to 1,298,399.12, 1,947,506.40 and 399,747.15 is: 599,592.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,399.12 : 1,947,506.40 = 399,747.15 : x
  2. Step 2: Convert to fraction form
    1,298,399.12/1,947,506.40 = 399,747.15/x
  3. Step 3: Cross multiply
    1,298,399.12x = 1,947,506.40 × 399,747.15
  4. Step 4: Simplify right side
    1,298,399.12x = 778,510,133,006.76
  5. Step 5: Solve for x
    x = 778,510,133,006.76/1,298,399.12
  6. Step 6: Final answer
    x = 599,592.32

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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.