Home / 1,239,569.21-1,860,350.31-640,705.83

Finding the Fourth Proportional to 1,239,569.21, 1,860,350.31 and 640,705.83

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Solution

The fourth proportional to 1,239,569.21, 1,860,350.31 and 640,705.83 is: 961,573.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,569.21 : 1,860,350.31 = 640,705.83 : x
  2. Step 2: Convert to fraction form
    1,239,569.21/1,860,350.31 = 640,705.83/x
  3. Step 3: Cross multiply
    1,239,569.21x = 1,860,350.31 × 640,705.83
  4. Step 4: Simplify right side
    1,239,569.21x = 1,191,937,289,459.31
  5. Step 5: Solve for x
    x = 1,191,937,289,459.31/1,239,569.21
  6. Step 6: Final answer
    x = 961,573.82

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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.