Home / 774,328.50-1,068,109.98-487,350.36

Finding the Fourth Proportional to 774,328.50, 1,068,109.98 and 487,350.36

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Solution

The fourth proportional to 774,328.50, 1,068,109.98 and 487,350.36 is: 672,251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,328.50 : 1,068,109.98 = 487,350.36 : x
  2. Step 2: Convert to fraction form
    774,328.50/1,068,109.98 = 487,350.36/x
  3. Step 3: Cross multiply
    774,328.50x = 1,068,109.98 × 487,350.36
  4. Step 4: Simplify right side
    774,328.50x = 520,543,783,272.59
  5. Step 5: Solve for x
    x = 520,543,783,272.59/774,328.50
  6. Step 6: Final answer
    x = 672,251.87

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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.