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Finding the Fourth Proportional to 472,412.63, 651,528.34 and 399,183.82

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Solution

The fourth proportional to 472,412.63, 651,528.34 and 399,183.82 is: 550,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,412.63 : 651,528.34 = 399,183.82 : x
  2. Step 2: Convert to fraction form
    472,412.63/651,528.34 = 399,183.82/x
  3. Step 3: Cross multiply
    472,412.63x = 651,528.34 × 399,183.82
  4. Step 4: Simplify right side
    472,412.63x = 260,079,571,599.46
  5. Step 5: Solve for x
    x = 260,079,571,599.46/472,412.63
  6. Step 6: Final answer
    x = 550,534.76

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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.