Home / 1,221,510.68-1,685,686.75-677,646.47

Finding the Fourth Proportional to 1,221,510.68, 1,685,686.75 and 677,646.47

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Solution

The fourth proportional to 1,221,510.68, 1,685,686.75 and 677,646.47 is: 935,153.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,510.68 : 1,685,686.75 = 677,646.47 : x
  2. Step 2: Convert to fraction form
    1,221,510.68/1,685,686.75 = 677,646.47/x
  3. Step 3: Cross multiply
    1,221,510.68x = 1,685,686.75 × 677,646.47
  4. Step 4: Simplify right side
    1,221,510.68x = 1,142,299,678,183.37
  5. Step 5: Solve for x
    x = 1,142,299,678,183.37/1,221,510.68
  6. Step 6: Final answer
    x = 935,153.25

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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.