Home / 1,152,460.62-1,590,485.76-643,239.54

Finding the Fourth Proportional to 1,152,460.62, 1,590,485.76 and 643,239.54

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Solution

The fourth proportional to 1,152,460.62, 1,590,485.76 and 643,239.54 is: 887,720.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,460.62 : 1,590,485.76 = 643,239.54 : x
  2. Step 2: Convert to fraction form
    1,152,460.62/1,590,485.76 = 643,239.54/x
  3. Step 3: Cross multiply
    1,152,460.62x = 1,590,485.76 × 643,239.54
  4. Step 4: Simplify right side
    1,152,460.62x = 1,023,063,328,638.95
  5. Step 5: Solve for x
    x = 1,023,063,328,638.95/1,152,460.62
  6. Step 6: Final answer
    x = 887,720.86

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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.