Home / 1,296,148.60-1,940,820.90-915,011.20

Finding the Fourth Proportional to 1,296,148.60, 1,940,820.90 and 915,011.20

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Solution

The fourth proportional to 1,296,148.60, 1,940,820.90 and 915,011.20 is: 1,370,115.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,148.60 : 1,940,820.90 = 915,011.20 : x
  2. Step 2: Convert to fraction form
    1,296,148.60/1,940,820.90 = 915,011.20/x
  3. Step 3: Cross multiply
    1,296,148.60x = 1,940,820.90 × 915,011.20
  4. Step 4: Simplify right side
    1,296,148.60x = 1,775,872,860,694.08
  5. Step 5: Solve for x
    x = 1,775,872,860,694.08/1,296,148.60
  6. Step 6: Final answer
    x = 1,370,115.17

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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.