Home / 859,102.52-1,185,523.10-515,128.31

Finding the Fourth Proportional to 859,102.52, 1,185,523.10 and 515,128.31

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Solution

The fourth proportional to 859,102.52, 1,185,523.10 and 515,128.31 is: 710,854.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,102.52 : 1,185,523.10 = 515,128.31 : x
  2. Step 2: Convert to fraction form
    859,102.52/1,185,523.10 = 515,128.31/x
  3. Step 3: Cross multiply
    859,102.52x = 1,185,523.10 × 515,128.31
  4. Step 4: Simplify right side
    859,102.52x = 610,696,502,465.70
  5. Step 5: Solve for x
    x = 610,696,502,465.70/859,102.52
  6. Step 6: Final answer
    x = 710,854.05

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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.