Home / 1,338,603.40-2,004,405.90-862,712.20

Finding the Fourth Proportional to 1,338,603.40, 2,004,405.90 and 862,712.20

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Solution

The fourth proportional to 1,338,603.40, 2,004,405.90 and 862,712.20 is: 1,291,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,603.40 : 2,004,405.90 = 862,712.20 : x
  2. Step 2: Convert to fraction form
    1,338,603.40/2,004,405.90 = 862,712.20/x
  3. Step 3: Cross multiply
    1,338,603.40x = 2,004,405.90 × 862,712.20
  4. Step 4: Simplify right side
    1,338,603.40x = 1,729,225,423,681.98
  5. Step 5: Solve for x
    x = 1,729,225,423,681.98/1,338,603.40
  6. Step 6: Final answer
    x = 1,291,813.11

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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.