Home / 860,138.88-1,187,146.80-497,512.32

Finding the Fourth Proportional to 860,138.88, 1,187,146.80 and 497,512.32

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Solution

The fourth proportional to 860,138.88, 1,187,146.80 and 497,512.32 is: 686,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,138.88 : 1,187,146.80 = 497,512.32 : x
  2. Step 2: Convert to fraction form
    860,138.88/1,187,146.80 = 497,512.32/x
  3. Step 3: Cross multiply
    860,138.88x = 1,187,146.80 × 497,512.32
  4. Step 4: Simplify right side
    860,138.88x = 590,620,158,648.58
  5. Step 5: Solve for x
    x = 590,620,158,648.58/860,138.88
  6. Step 6: Final answer
    x = 686,656.74

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Double scale
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1.5x scale

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.