Home / 1,288,666.30-1,778,381.52-707,913.90

Finding the Fourth Proportional to 1,288,666.30, 1,778,381.52 and 707,913.90

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Solution

The fourth proportional to 1,288,666.30, 1,778,381.52 and 707,913.90 is: 976,933.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,666.30 : 1,778,381.52 = 707,913.90 : x
  2. Step 2: Convert to fraction form
    1,288,666.30/1,778,381.52 = 707,913.90/x
  3. Step 3: Cross multiply
    1,288,666.30x = 1,778,381.52 × 707,913.90
  4. Step 4: Simplify right side
    1,288,666.30x = 1,258,940,997,511.13
  5. Step 5: Solve for x
    x = 1,258,940,997,511.13/1,288,666.30
  6. Step 6: Final answer
    x = 976,933.28

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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.