Home / 1,078,139.40-1,617,597.90-447,246.60

Finding the Fourth Proportional to 1,078,139.40, 1,617,597.90 and 447,246.60

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Solution

The fourth proportional to 1,078,139.40, 1,617,597.90 and 447,246.60 is: 671,031.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,139.40 : 1,617,597.90 = 447,246.60 : x
  2. Step 2: Convert to fraction form
    1,078,139.40/1,617,597.90 = 447,246.60/x
  3. Step 3: Cross multiply
    1,078,139.40x = 1,617,597.90 × 447,246.60
  4. Step 4: Simplify right side
    1,078,139.40x = 723,465,160,942.14
  5. Step 5: Solve for x
    x = 723,465,160,942.14/1,078,139.40
  6. Step 6: Final answer
    x = 671,031.19

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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.