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Finding the Fourth Proportional to 557,558.04, 769,439.40 and 302,909.40

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Solution

The fourth proportional to 557,558.04, 769,439.40 and 302,909.40 is: 418,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,558.04 : 769,439.40 = 302,909.40 : x
  2. Step 2: Convert to fraction form
    557,558.04/769,439.40 = 302,909.40/x
  3. Step 3: Cross multiply
    557,558.04x = 769,439.40 × 302,909.40
  4. Step 4: Simplify right side
    557,558.04x = 233,070,426,990.36
  5. Step 5: Solve for x
    x = 233,070,426,990.36/557,558.04
  6. Step 6: Final answer
    x = 418,020.03

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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.