Home / 1,688,990.63-2,534,525.80-664,140.56

Finding the Fourth Proportional to 1,688,990.63, 2,534,525.80 and 664,140.56

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Solution

The fourth proportional to 1,688,990.63, 2,534,525.80 and 664,140.56 is: 996,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688,990.63 : 2,534,525.80 = 664,140.56 : x
  2. Step 2: Convert to fraction form
    1,688,990.63/2,534,525.80 = 664,140.56/x
  3. Step 3: Cross multiply
    1,688,990.63x = 2,534,525.80 × 664,140.56
  4. Step 4: Simplify right side
    1,688,990.63x = 1,683,281,384,146.45
  5. Step 5: Solve for x
    x = 1,683,281,384,146.45/1,688,990.63
  6. Step 6: Final answer
    x = 996,619.73

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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.