Home / 1,186,345.20-1,637,136.15-642,476.58

Finding the Fourth Proportional to 1,186,345.20, 1,637,136.15 and 642,476.58

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Solution

The fourth proportional to 1,186,345.20, 1,637,136.15 and 642,476.58 is: 886,606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,345.20 : 1,637,136.15 = 642,476.58 : x
  2. Step 2: Convert to fraction form
    1,186,345.20/1,637,136.15 = 642,476.58/x
  3. Step 3: Cross multiply
    1,186,345.20x = 1,637,136.15 × 642,476.58
  4. Step 4: Simplify right side
    1,186,345.20x = 1,051,821,634,646.37
  5. Step 5: Solve for x
    x = 1,051,821,634,646.37/1,186,345.20
  6. Step 6: Final answer
    x = 886,606.73

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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.