Home / 860,138.17-1,187,137.35-497,782.64

Finding the Fourth Proportional to 860,138.17, 1,187,137.35 and 497,782.64

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Solution

The fourth proportional to 860,138.17, 1,187,137.35 and 497,782.64 is: 687,024.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,138.17 : 1,187,137.35 = 497,782.64 : x
  2. Step 2: Convert to fraction form
    860,138.17/1,187,137.35 = 497,782.64/x
  3. Step 3: Cross multiply
    860,138.17x = 1,187,137.35 × 497,782.64
  4. Step 4: Simplify right side
    860,138.17x = 590,936,364,125.60
  5. Step 5: Solve for x
    x = 590,936,364,125.60/860,138.17
  6. Step 6: Final answer
    x = 687,024.93

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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.