Home / 1,186,387.44-1,637,206.56-642,510.72

Finding the Fourth Proportional to 1,186,387.44, 1,637,206.56 and 642,510.72

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Solution

The fourth proportional to 1,186,387.44, 1,637,206.56 and 642,510.72 is: 886,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,387.44 : 1,637,206.56 = 642,510.72 : x
  2. Step 2: Convert to fraction form
    1,186,387.44/1,637,206.56 = 642,510.72/x
  3. Step 3: Cross multiply
    1,186,387.44x = 1,637,206.56 × 642,510.72
  4. Step 4: Simplify right side
    1,186,387.44x = 1,051,922,765,654.32
  5. Step 5: Solve for x
    x = 1,051,922,765,654.32/1,186,387.44
  6. Step 6: Final answer
    x = 886,660.40

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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.