Home / 1,070,218.87-1,603,189.23-643,521.06

Finding the Fourth Proportional to 1,070,218.87, 1,603,189.23 and 643,521.06

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Solution

The fourth proportional to 1,070,218.87, 1,603,189.23 and 643,521.06 is: 963,995.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,218.87 : 1,603,189.23 = 643,521.06 : x
  2. Step 2: Convert to fraction form
    1,070,218.87/1,603,189.23 = 643,521.06/x
  3. Step 3: Cross multiply
    1,070,218.87x = 1,603,189.23 × 643,521.06
  4. Step 4: Simplify right side
    1,070,218.87x = 1,031,686,032,670.18
  5. Step 5: Solve for x
    x = 1,031,686,032,670.18/1,070,218.87
  6. Step 6: Final answer
    x = 963,995.37

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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.