Home / 860,865.40-1,291,298.10-545,678.20

Finding the Fourth Proportional to 860,865.40, 1,291,298.10 and 545,678.20

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Solution

The fourth proportional to 860,865.40, 1,291,298.10 and 545,678.20 is: 818,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,865.40 : 1,291,298.10 = 545,678.20 : x
  2. Step 2: Convert to fraction form
    860,865.40/1,291,298.10 = 545,678.20/x
  3. Step 3: Cross multiply
    860,865.40x = 1,291,298.10 × 545,678.20
  4. Step 4: Simplify right side
    860,865.40x = 704,633,222,871.42
  5. Step 5: Solve for x
    x = 704,633,222,871.42/860,865.40
  6. Step 6: Final answer
    x = 818,517.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.