Home / 1,385,416.71-1,912,193.73-812,641.41

Finding the Fourth Proportional to 1,385,416.71, 1,912,193.73 and 812,641.41

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Solution

The fourth proportional to 1,385,416.71, 1,912,193.73 and 812,641.41 is: 1,121,632.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,416.71 : 1,912,193.73 = 812,641.41 : x
  2. Step 2: Convert to fraction form
    1,385,416.71/1,912,193.73 = 812,641.41/x
  3. Step 3: Cross multiply
    1,385,416.71x = 1,912,193.73 × 812,641.41
  4. Step 4: Simplify right side
    1,385,416.71x = 1,553,927,808,940.36
  5. Step 5: Solve for x
    x = 1,553,927,808,940.36/1,385,416.71
  6. Step 6: Final answer
    x = 1,121,632.07

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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.