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Finding the Fourth Proportional to 646,007.40, 891,500.58 and 359,539.56

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Solution

The fourth proportional to 646,007.40, 891,500.58 and 359,539.56 is: 496,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,007.40 : 891,500.58 = 359,539.56 : x
  2. Step 2: Convert to fraction form
    646,007.40/891,500.58 = 359,539.56/x
  3. Step 3: Cross multiply
    646,007.40x = 891,500.58 × 359,539.56
  4. Step 4: Simplify right side
    646,007.40x = 320,529,726,272.95
  5. Step 5: Solve for x
    x = 320,529,726,272.95/646,007.40
  6. Step 6: Final answer
    x = 496,170.36

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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.