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Finding the Fourth Proportional to 520,339.64, 718,082.70 and 293,980.28

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Solution

The fourth proportional to 520,339.64, 718,082.70 and 293,980.28 is: 405,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,339.64 : 718,082.70 = 293,980.28 : x
  2. Step 2: Convert to fraction form
    520,339.64/718,082.70 = 293,980.28/x
  3. Step 3: Cross multiply
    520,339.64x = 718,082.70 × 293,980.28
  4. Step 4: Simplify right side
    520,339.64x = 211,102,153,209.16
  5. Step 5: Solve for x
    x = 211,102,153,209.16/520,339.64
  6. Step 6: Final answer
    x = 405,700.69

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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.