Home / 1,221,510.59-1,685,686.59-677,646.40

Finding the Fourth Proportional to 1,221,510.59, 1,685,686.59 and 677,646.40

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Solution

The fourth proportional to 1,221,510.59, 1,685,686.59 and 677,646.40 is: 935,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,510.59 : 1,685,686.59 = 677,646.40 : x
  2. Step 2: Convert to fraction form
    1,221,510.59/1,685,686.59 = 677,646.40/x
  3. Step 3: Cross multiply
    1,221,510.59x = 1,685,686.59 × 677,646.40
  4. Step 4: Simplify right side
    1,221,510.59x = 1,142,299,449,241.78
  5. Step 5: Solve for x
    x = 1,142,299,449,241.78/1,221,510.59
  6. Step 6: Final answer
    x = 935,153.13

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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.