Home / 1,003,083.57-1,384,407.30-640,748.78

Finding the Fourth Proportional to 1,003,083.57, 1,384,407.30 and 640,748.78

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Solution

The fourth proportional to 1,003,083.57, 1,384,407.30 and 640,748.78 is: 884,330.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003,083.57 : 1,384,407.30 = 640,748.78 : x
  2. Step 2: Convert to fraction form
    1,003,083.57/1,384,407.30 = 640,748.78/x
  3. Step 3: Cross multiply
    1,003,083.57x = 1,384,407.30 × 640,748.78
  4. Step 4: Simplify right side
    1,003,083.57x = 887,057,285,566.18
  5. Step 5: Solve for x
    x = 887,057,285,566.18/1,003,083.57
  6. Step 6: Final answer
    x = 884,330.39

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1.5x scale

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.