Home / 692,311.02-955,388.70-390,505.02

Finding the Fourth Proportional to 692,311.02, 955,388.70 and 390,505.02

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Solution

The fourth proportional to 692,311.02, 955,388.70 and 390,505.02 is: 538,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,311.02 : 955,388.70 = 390,505.02 : x
  2. Step 2: Convert to fraction form
    692,311.02/955,388.70 = 390,505.02/x
  3. Step 3: Cross multiply
    692,311.02x = 955,388.70 × 390,505.02
  4. Step 4: Simplify right side
    692,311.02x = 373,084,083,401.27
  5. Step 5: Solve for x
    x = 373,084,083,401.27/692,311.02
  6. Step 6: Final answer
    x = 538,896.64

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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.