Home / 328,029,035.70-492,048,802.35-85,691,939.70

Finding the Fourth Proportional to 328,029,035.70, 492,048,802.35 and 85,691,939.70

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Solution

The fourth proportional to 328,029,035.70, 492,048,802.35 and 85,691,939.70 is: 128,539,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,029,035.70 : 492,048,802.35 = 85,691,939.70 : x
  2. Step 2: Convert to fraction form
    328,029,035.70/492,048,802.35 = 85,691,939.70/x
  3. Step 3: Cross multiply
    328,029,035.70x = 492,048,802.35 × 85,691,939.70
  4. Step 4: Simplify right side
    328,029,035.70x = 42,164,616,300,433,424
  5. Step 5: Solve for x
    x = 42,164,616,300,433,424/328,029,035.70
  6. Step 6: Final answer
    x = 128,539,280.71

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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.