Home / 1,186,264.42-1,637,045.78-642,400.80

Finding the Fourth Proportional to 1,186,264.42, 1,637,045.78 and 642,400.80

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Solution

The fourth proportional to 1,186,264.42, 1,637,045.78 and 642,400.80 is: 886,513.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,264.42 : 1,637,045.78 = 642,400.80 : x
  2. Step 2: Convert to fraction form
    1,186,264.42/1,637,045.78 = 642,400.80/x
  3. Step 3: Cross multiply
    1,186,264.42x = 1,637,045.78 × 642,400.80
  4. Step 4: Simplify right side
    1,186,264.42x = 1,051,639,515,496.62
  5. Step 5: Solve for x
    x = 1,051,639,515,496.62/1,186,264.42
  6. Step 6: Final answer
    x = 886,513.58

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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.