Home / 328,029,078.70-492,048,866.85-85,691,982.70

Finding the Fourth Proportional to 328,029,078.70, 492,048,866.85 and 85,691,982.70

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Solution

The fourth proportional to 328,029,078.70, 492,048,866.85 and 85,691,982.70 is: 128,539,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,029,078.70 : 492,048,866.85 = 85,691,982.70 : x
  2. Step 2: Convert to fraction form
    328,029,078.70/492,048,866.85 = 85,691,982.70/x
  3. Step 3: Cross multiply
    328,029,078.70x = 492,048,866.85 × 85,691,982.70
  4. Step 4: Simplify right side
    328,029,078.70x = 42,164,642,985,664,808
  5. Step 5: Solve for x
    x = 42,164,642,985,664,808/328,029,078.70
  6. Step 6: Final answer
    x = 128,539,345.21

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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.