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Finding the Fourth Proportional to 503,809.20, 753,964.20 and 346,345.20

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Solution

The fourth proportional to 503,809.20, 753,964.20 and 346,345.20 is: 518,315.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,809.20 : 753,964.20 = 346,345.20 : x
  2. Step 2: Convert to fraction form
    503,809.20/753,964.20 = 346,345.20/x
  3. Step 3: Cross multiply
    503,809.20x = 753,964.20 × 346,345.20
  4. Step 4: Simplify right side
    503,809.20x = 261,131,881,641.84
  5. Step 5: Solve for x
    x = 261,131,881,641.84/503,809.20
  6. Step 6: Final answer
    x = 518,315.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.