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Finding the Fourth Proportional to 557,560.80, 769,429.80 and 302,914.08

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Solution

The fourth proportional to 557,560.80, 769,429.80 and 302,914.08 is: 418,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,560.80 : 769,429.80 = 302,914.08 : x
  2. Step 2: Convert to fraction form
    557,560.80/769,429.80 = 302,914.08/x
  3. Step 3: Cross multiply
    557,560.80x = 769,429.80 × 302,914.08
  4. Step 4: Simplify right side
    557,560.80x = 233,071,119,991.58
  5. Step 5: Solve for x
    x = 233,071,119,991.58/557,560.80
  6. Step 6: Final answer
    x = 418,019.20

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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.