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Finding the Fourth Proportional to 520,504.20, 718,018.83 and 316,617.48

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Solution

The fourth proportional to 520,504.20, 718,018.83 and 316,617.48 is: 436,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,504.20 : 718,018.83 = 316,617.48 : x
  2. Step 2: Convert to fraction form
    520,504.20/718,018.83 = 316,617.48/x
  3. Step 3: Cross multiply
    520,504.20x = 718,018.83 × 316,617.48
  4. Step 4: Simplify right side
    520,504.20x = 227,337,312,547.15
  5. Step 5: Solve for x
    x = 227,337,312,547.15/520,504.20
  6. Step 6: Final answer
    x = 436,763.65

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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.