Home / 668,891.40-1,003,490.37-289,875.75

Finding the Fourth Proportional to 668,891.40, 1,003,490.37 and 289,875.75

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Solution

The fourth proportional to 668,891.40, 1,003,490.37 and 289,875.75 is: 434,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,891.40 : 1,003,490.37 = 289,875.75 : x
  2. Step 2: Convert to fraction form
    668,891.40/1,003,490.37 = 289,875.75/x
  3. Step 3: Cross multiply
    668,891.40x = 1,003,490.37 × 289,875.75
  4. Step 4: Simplify right side
    668,891.40x = 290,887,523,621.53
  5. Step 5: Solve for x
    x = 290,887,523,621.53/668,891.40
  6. Step 6: Final answer
    x = 434,880.05

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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.