Home / 1,515,638.16-2,091,509.64-870,604.56

Finding the Fourth Proportional to 1,515,638.16, 2,091,509.64 and 870,604.56

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Solution

The fourth proportional to 1,515,638.16, 2,091,509.64 and 870,604.56 is: 1,201,393.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,638.16 : 2,091,509.64 = 870,604.56 : x
  2. Step 2: Convert to fraction form
    1,515,638.16/2,091,509.64 = 870,604.56/x
  3. Step 3: Cross multiply
    1,515,638.16x = 2,091,509.64 × 870,604.56
  4. Step 4: Simplify right side
    1,515,638.16x = 1,820,877,829,867.96
  5. Step 5: Solve for x
    x = 1,820,877,829,867.96/1,515,638.16
  6. Step 6: Final answer
    x = 1,201,393.50

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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.