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Finding the Fourth Proportional to 684,310.63, 943,343.13 and 479,742.16

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Solution

The fourth proportional to 684,310.63, 943,343.13 and 479,742.16 is: 661,339.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,310.63 : 943,343.13 = 479,742.16 : x
  2. Step 2: Convert to fraction form
    684,310.63/943,343.13 = 479,742.16/x
  3. Step 3: Cross multiply
    684,310.63x = 943,343.13 × 479,742.16
  4. Step 4: Simplify right side
    684,310.63x = 452,561,470,807.36
  5. Step 5: Solve for x
    x = 452,561,470,807.36/684,310.63
  6. Step 6: Final answer
    x = 661,339.24

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Double scale
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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.