Home / 1,312,406.70-1,811,356.11-768,510.74

Finding the Fourth Proportional to 1,312,406.70, 1,811,356.11 and 768,510.74

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Solution

The fourth proportional to 1,312,406.70, 1,811,356.11 and 768,510.74 is: 1,060,682.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,406.70 : 1,811,356.11 = 768,510.74 : x
  2. Step 2: Convert to fraction form
    1,312,406.70/1,811,356.11 = 768,510.74/x
  3. Step 3: Cross multiply
    1,312,406.70x = 1,811,356.11 × 768,510.74
  4. Step 4: Simplify right side
    1,312,406.70x = 1,392,046,615,442.84
  5. Step 5: Solve for x
    x = 1,392,046,615,442.84/1,312,406.70
  6. Step 6: Final answer
    x = 1,060,682.34

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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.