Home / 1,152,375.64-1,590,088.20-643,076.80

Finding the Fourth Proportional to 1,152,375.64, 1,590,088.20 and 643,076.80

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Solution

The fourth proportional to 1,152,375.64, 1,590,088.20 and 643,076.80 is: 887,339.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,375.64 : 1,590,088.20 = 643,076.80 : x
  2. Step 2: Convert to fraction form
    1,152,375.64/1,590,088.20 = 643,076.80/x
  3. Step 3: Cross multiply
    1,152,375.64x = 1,590,088.20 × 643,076.80
  4. Step 4: Simplify right side
    1,152,375.64x = 1,022,548,831,373.76
  5. Step 5: Solve for x
    x = 1,022,548,831,373.76/1,152,375.64
  6. Step 6: Final answer
    x = 887,339.85

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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.