Home / 1,070,207.39-1,603,172.26-643,509.62

Finding the Fourth Proportional to 1,070,207.39, 1,603,172.26 and 643,509.62

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Solution

The fourth proportional to 1,070,207.39, 1,603,172.26 and 643,509.62 is: 963,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,207.39 : 1,603,172.26 = 643,509.62 : x
  2. Step 2: Convert to fraction form
    1,070,207.39/1,603,172.26 = 643,509.62/x
  3. Step 3: Cross multiply
    1,070,207.39x = 1,603,172.26 × 643,509.62
  4. Step 4: Simplify right side
    1,070,207.39x = 1,031,656,771,827.14
  5. Step 5: Solve for x
    x = 1,031,656,771,827.14/1,070,207.39
  6. Step 6: Final answer
    x = 963,978.37

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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.