Home / 711,158,801,072.15-981,372,866,324.15-385,991,111,442.45

Finding the Fourth Proportional to 711,158,801,072.15, 981,372,866,324.15 and 385,991,111,442.45

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Solution

The fourth proportional to 711,158,801,072.15, 981,372,866,324.15 and 385,991,111,442.45 is: 532,653,470,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,158,801,072.15 : 981,372,866,324.15 = 385,991,111,442.45 : x
  2. Step 2: Convert to fraction form
    711,158,801,072.15/981,372,866,324.15 = 385,991,111,442.45/x
  3. Step 3: Cross multiply
    711,158,801,072.15x = 981,372,866,324.15 × 385,991,111,442.45
  4. Step 4: Simplify right side
    711,158,801,072.15x = 378,801,203,411,921,563,287,552
  5. Step 5: Solve for x
    x = 378,801,203,411,921,563,287,552/711,158,801,072.15
  6. Step 6: Final answer
    x = 532,653,470,421.57

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Double scale
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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.