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Finding the Fourth Proportional to 487,369,951.38, 672,579,657.63 and 299,103,878.94

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Solution

The fourth proportional to 487,369,951.38, 672,579,657.63 and 299,103,878.94 is: 412,768,952.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,369,951.38 : 672,579,657.63 = 299,103,878.94 : x
  2. Step 2: Convert to fraction form
    487,369,951.38/672,579,657.63 = 299,103,878.94/x
  3. Step 3: Cross multiply
    487,369,951.38x = 672,579,657.63 × 299,103,878.94
  4. Step 4: Simplify right side
    487,369,951.38x = 201,171,184,493,270,176
  5. Step 5: Solve for x
    x = 201,171,184,493,270,176/487,369,951.38
  6. Step 6: Final answer
    x = 412,768,952.87

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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.