Home / 487,539.45-672,800.55-272,679.34

Finding the Fourth Proportional to 487,539.45, 672,800.55 and 272,679.34

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Solution

The fourth proportional to 487,539.45, 672,800.55 and 272,679.34 is: 376,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,539.45 : 672,800.55 = 272,679.34 : x
  2. Step 2: Convert to fraction form
    487,539.45/672,800.55 = 272,679.34/x
  3. Step 3: Cross multiply
    487,539.45x = 672,800.55 × 272,679.34
  4. Step 4: Simplify right side
    487,539.45x = 183,458,809,925.64
  5. Step 5: Solve for x
    x = 183,458,809,925.64/487,539.45
  6. Step 6: Final answer
    x = 376,295.31

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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.