Home / 1,108,140.50-1,529,168.08-642,958.41

Finding the Fourth Proportional to 1,108,140.50, 1,529,168.08 and 642,958.41

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Solution

The fourth proportional to 1,108,140.50, 1,529,168.08 and 642,958.41 is: 887,244.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,140.50 : 1,529,168.08 = 642,958.41 : x
  2. Step 2: Convert to fraction form
    1,108,140.50/1,529,168.08 = 642,958.41/x
  3. Step 3: Cross multiply
    1,108,140.50x = 1,529,168.08 × 642,958.41
  4. Step 4: Simplify right side
    1,108,140.50x = 983,191,477,339.55
  5. Step 5: Solve for x
    x = 983,191,477,339.55/1,108,140.50
  6. Step 6: Final answer
    x = 887,244.42

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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.