Home / 1,389,385.36-2,080,330.80-908,420.32

Finding the Fourth Proportional to 1,389,385.36, 2,080,330.80 and 908,420.32

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Solution

The fourth proportional to 1,389,385.36, 2,080,330.80 and 908,420.32 is: 1,360,180.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,385.36 : 2,080,330.80 = 908,420.32 : x
  2. Step 2: Convert to fraction form
    1,389,385.36/2,080,330.80 = 908,420.32/x
  3. Step 3: Cross multiply
    1,389,385.36x = 2,080,330.80 × 908,420.32
  4. Step 4: Simplify right side
    1,389,385.36x = 1,889,814,771,041.86
  5. Step 5: Solve for x
    x = 1,889,814,771,041.86/1,389,385.36
  6. Step 6: Final answer
    x = 1,360,180.43

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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.