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Finding the Fourth Proportional to 646,765.52, 892,478.52 and 360,279.45

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Solution

The fourth proportional to 646,765.52, 892,478.52 and 360,279.45 is: 497,153.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,765.52 : 892,478.52 = 360,279.45 : x
  2. Step 2: Convert to fraction form
    646,765.52/892,478.52 = 360,279.45/x
  3. Step 3: Cross multiply
    646,765.52x = 892,478.52 × 360,279.45
  4. Step 4: Simplify right side
    646,765.52x = 321,541,670,322.41
  5. Step 5: Solve for x
    x = 321,541,670,322.41/646,765.52
  6. Step 6: Final answer
    x = 497,153.39

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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.