Home / 1,285,286.10-1,927,929.15-753,407.70

Finding the Fourth Proportional to 1,285,286.10, 1,927,929.15 and 753,407.70

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Solution

The fourth proportional to 1,285,286.10, 1,927,929.15 and 753,407.70 is: 1,130,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,286.10 : 1,927,929.15 = 753,407.70 : x
  2. Step 2: Convert to fraction form
    1,285,286.10/1,927,929.15 = 753,407.70/x
  3. Step 3: Cross multiply
    1,285,286.10x = 1,927,929.15 × 753,407.70
  4. Step 4: Simplify right side
    1,285,286.10x = 1,452,516,666,664.45
  5. Step 5: Solve for x
    x = 1,452,516,666,664.45/1,285,286.10
  6. Step 6: Final answer
    x = 1,130,111.55

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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.