Home / 911,028.08-1,257,218.76-529,079.47

Finding the Fourth Proportional to 911,028.08, 1,257,218.76 and 529,079.47

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Solution

The fourth proportional to 911,028.08, 1,257,218.76 and 529,079.47 is: 730,129.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,028.08 : 1,257,218.76 = 529,079.47 : x
  2. Step 2: Convert to fraction form
    911,028.08/1,257,218.76 = 529,079.47/x
  3. Step 3: Cross multiply
    911,028.08x = 1,257,218.76 × 529,079.47
  4. Step 4: Simplify right side
    911,028.08x = 665,168,626,283.37
  5. Step 5: Solve for x
    x = 665,168,626,283.37/911,028.08
  6. Step 6: Final answer
    x = 730,129.66

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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.