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Finding the Fourth Proportional to 646,014.38, 891,491.02 and 359,534.54

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Solution

The fourth proportional to 646,014.38, 891,491.02 and 359,534.54 is: 496,152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,014.38 : 891,491.02 = 359,534.54 : x
  2. Step 2: Convert to fraction form
    646,014.38/891,491.02 = 359,534.54/x
  3. Step 3: Cross multiply
    646,014.38x = 891,491.02 × 359,534.54
  4. Step 4: Simplify right side
    646,014.38x = 320,521,813,789.83
  5. Step 5: Solve for x
    x = 320,521,813,789.83/646,014.38
  6. Step 6: Final answer
    x = 496,152.75

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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.