Home / 1,070,214.12-1,603,182.11-643,516.31

Finding the Fourth Proportional to 1,070,214.12, 1,603,182.11 and 643,516.31

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Solution

The fourth proportional to 1,070,214.12, 1,603,182.11 and 643,516.31 is: 963,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,214.12 : 1,603,182.11 = 643,516.31 : x
  2. Step 2: Convert to fraction form
    1,070,214.12/1,603,182.11 = 643,516.31/x
  3. Step 3: Cross multiply
    1,070,214.12x = 1,603,182.11 × 643,516.31
  4. Step 4: Simplify right side
    1,070,214.12x = 1,031,673,836,475.59
  5. Step 5: Solve for x
    x = 1,031,673,836,475.59/1,070,214.12
  6. Step 6: Final answer
    x = 963,988.25

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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.