Home / 1,152,643.20-1,590,649.44-643,345.44

Finding the Fourth Proportional to 1,152,643.20, 1,590,649.44 and 643,345.44

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Solution

The fourth proportional to 1,152,643.20, 1,590,649.44 and 643,345.44 is: 887,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,643.20 : 1,590,649.44 = 643,345.44 : x
  2. Step 2: Convert to fraction form
    1,152,643.20/1,590,649.44 = 643,345.44/x
  3. Step 3: Cross multiply
    1,152,643.20x = 1,590,649.44 × 643,345.44
  4. Step 4: Simplify right side
    1,152,643.20x = 1,023,337,063,862.55
  5. Step 5: Solve for x
    x = 1,023,337,063,862.55/1,152,643.20
  6. Step 6: Final answer
    x = 887,817.73

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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.