Home / 1,387,256.40-1,916,031.24-933,829.20

Finding the Fourth Proportional to 1,387,256.40, 1,916,031.24 and 933,829.20

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Solution

The fourth proportional to 1,387,256.40, 1,916,031.24 and 933,829.20 is: 1,289,773.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,256.40 : 1,916,031.24 = 933,829.20 : x
  2. Step 2: Convert to fraction form
    1,387,256.40/1,916,031.24 = 933,829.20/x
  3. Step 3: Cross multiply
    1,387,256.40x = 1,916,031.24 × 933,829.20
  4. Step 4: Simplify right side
    1,387,256.40x = 1,789,245,920,024.21
  5. Step 5: Solve for x
    x = 1,789,245,920,024.21/1,387,256.40
  6. Step 6: Final answer
    x = 1,289,773.05

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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.