Home / 1,152,380.64-1,590,095.10-643,081.80

Finding the Fourth Proportional to 1,152,380.64, 1,590,095.10 and 643,081.80

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Solution

The fourth proportional to 1,152,380.64, 1,590,095.10 and 643,081.80 is: 887,346.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,380.64 : 1,590,095.10 = 643,081.80 : x
  2. Step 2: Convert to fraction form
    1,152,380.64/1,590,095.10 = 643,081.80/x
  3. Step 3: Cross multiply
    1,152,380.64x = 1,590,095.10 × 643,081.80
  4. Step 4: Simplify right side
    1,152,380.64x = 1,022,561,219,079.18
  5. Step 5: Solve for x
    x = 1,022,561,219,079.18/1,152,380.64
  6. Step 6: Final answer
    x = 887,346.75

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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.