Home / 1,152,363.40-1,590,262.78-643,065.64

Finding the Fourth Proportional to 1,152,363.40, 1,590,262.78 and 643,065.64

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Solution

The fourth proportional to 1,152,363.40, 1,590,262.78 and 643,065.64 is: 887,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,363.40 : 1,590,262.78 = 643,065.64 : x
  2. Step 2: Convert to fraction form
    1,152,363.40/1,590,262.78 = 643,065.64/x
  3. Step 3: Cross multiply
    1,152,363.40x = 1,590,262.78 × 643,065.64
  4. Step 4: Simplify right side
    1,152,363.40x = 1,022,643,352,388.88
  5. Step 5: Solve for x
    x = 1,022,643,352,388.88/1,152,363.40
  6. Step 6: Final answer
    x = 887,431.30

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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.