Home / 1,392,876.79-1,922,250.01-781,225.74

Finding the Fourth Proportional to 1,392,876.79, 1,922,250.01 and 781,225.74

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Solution

The fourth proportional to 1,392,876.79, 1,922,250.01 and 781,225.74 is: 1,078,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,876.79 : 1,922,250.01 = 781,225.74 : x
  2. Step 2: Convert to fraction form
    1,392,876.79/1,922,250.01 = 781,225.74/x
  3. Step 3: Cross multiply
    1,392,876.79x = 1,922,250.01 × 781,225.74
  4. Step 4: Simplify right side
    1,392,876.79x = 1,501,711,186,527.26
  5. Step 5: Solve for x
    x = 1,501,711,186,527.26/1,392,876.79
  6. Step 6: Final answer
    x = 1,078,136.41

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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.