Home / 1,289,209.24-1,779,138.40-708,468.47

Finding the Fourth Proportional to 1,289,209.24, 1,779,138.40 and 708,468.47

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Solution

The fourth proportional to 1,289,209.24, 1,779,138.40 and 708,468.47 is: 977,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,209.24 : 1,779,138.40 = 708,468.47 : x
  2. Step 2: Convert to fraction form
    1,289,209.24/1,779,138.40 = 708,468.47/x
  3. Step 3: Cross multiply
    1,289,209.24x = 1,779,138.40 × 708,468.47
  4. Step 4: Simplify right side
    1,289,209.24x = 1,260,463,465,514.62
  5. Step 5: Solve for x
    x = 1,260,463,465,514.62/1,289,209.24
  6. Step 6: Final answer
    x = 977,702.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.