Home / 623,589.39-860,691.10-405,418.37

Finding the Fourth Proportional to 623,589.39, 860,691.10 and 405,418.37

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Solution

The fourth proportional to 623,589.39, 860,691.10 and 405,418.37 is: 559,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,589.39 : 860,691.10 = 405,418.37 : x
  2. Step 2: Convert to fraction form
    623,589.39/860,691.10 = 405,418.37/x
  3. Step 3: Cross multiply
    623,589.39x = 860,691.10 × 405,418.37
  4. Step 4: Simplify right side
    623,589.39x = 348,939,983,973.69
  5. Step 5: Solve for x
    x = 348,939,983,973.69/623,589.39
  6. Step 6: Final answer
    x = 559,566.90

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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.