Home / 1,152,503.12-1,590,389.52-643,238.24

Finding the Fourth Proportional to 1,152,503.12, 1,590,389.52 and 643,238.24

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Solution

The fourth proportional to 1,152,503.12, 1,590,389.52 and 643,238.24 is: 887,632.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,503.12 : 1,590,389.52 = 643,238.24 : x
  2. Step 2: Convert to fraction form
    1,152,503.12/1,590,389.52 = 643,238.24/x
  3. Step 3: Cross multiply
    1,152,503.12x = 1,590,389.52 × 643,238.24
  4. Step 4: Simplify right side
    1,152,503.12x = 1,022,999,355,759.24
  5. Step 5: Solve for x
    x = 1,022,999,355,759.24/1,152,503.12
  6. Step 6: Final answer
    x = 887,632.61

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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.