Home / 1,186,903.85-1,637,925.09-643,053.15

Finding the Fourth Proportional to 1,186,903.85, 1,637,925.09 and 643,053.15

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Solution

The fourth proportional to 1,186,903.85, 1,637,925.09 and 643,053.15 is: 887,412.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,903.85 : 1,637,925.09 = 643,053.15 : x
  2. Step 2: Convert to fraction form
    1,186,903.85/1,637,925.09 = 643,053.15/x
  3. Step 3: Cross multiply
    1,186,903.85x = 1,637,925.09 × 643,053.15
  4. Step 4: Simplify right side
    1,186,903.85x = 1,053,272,888,588.53
  5. Step 5: Solve for x
    x = 1,053,272,888,588.53/1,186,903.85
  6. Step 6: Final answer
    x = 887,412.15

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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.