Home / 1,005,079.96-1,387,333.58-643,477.74

Finding the Fourth Proportional to 1,005,079.96, 1,387,333.58 and 643,477.74

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Solution

The fourth proportional to 1,005,079.96, 1,387,333.58 and 643,477.74 is: 888,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,079.96 : 1,387,333.58 = 643,477.74 : x
  2. Step 2: Convert to fraction form
    1,005,079.96/1,387,333.58 = 643,477.74/x
  3. Step 3: Cross multiply
    1,005,079.96x = 1,387,333.58 × 643,477.74
  4. Step 4: Simplify right side
    1,005,079.96x = 892,718,276,684.51
  5. Step 5: Solve for x
    x = 892,718,276,684.51/1,005,079.96
  6. Step 6: Final answer
    x = 888,206.22

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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.