Home / 914,688.56-1,262,709-642,989.36

Finding the Fourth Proportional to 914,688.56, 1,262,709 and 642,989.36

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Solution

The fourth proportional to 914,688.56, 1,262,709 and 642,989.36 is: 887,633.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,688.56 : 1,262,709 = 642,989.36 : x
  2. Step 2: Convert to fraction form
    914,688.56/1,262,709 = 642,989.36/x
  3. Step 3: Cross multiply
    914,688.56x = 1,262,709 × 642,989.36
  4. Step 4: Simplify right side
    914,688.56x = 811,908,454,933.01
  5. Step 5: Solve for x
    x = 811,908,454,933.01/914,688.56
  6. Step 6: Final answer
    x = 887,633.77

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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.