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Finding the Fourth Proportional to 557,129.38, 768,838.53 and 302,480.59

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Solution

The fourth proportional to 557,129.38, 768,838.53 and 302,480.59 is: 417,423.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,129.38 : 768,838.53 = 302,480.59 : x
  2. Step 2: Convert to fraction form
    557,129.38/768,838.53 = 302,480.59/x
  3. Step 3: Cross multiply
    557,129.38x = 768,838.53 × 302,480.59
  4. Step 4: Simplify right side
    557,129.38x = 232,558,732,169.13
  5. Step 5: Solve for x
    x = 232,558,732,169.13/557,129.38
  6. Step 6: Final answer
    x = 417,423.21

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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.