Home / 711,139,092,029.40-981,372,673,303.47-385,978,450,877.94

Finding the Fourth Proportional to 711,139,092,029.40, 981,372,673,303.47 and 385,978,450,877.94

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Solution

The fourth proportional to 711,139,092,029.40, 981,372,673,303.47 and 385,978,450,877.94 is: 532,650,656,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,029.40 : 981,372,673,303.47 = 385,978,450,877.94 : x
  2. Step 2: Convert to fraction form
    711,139,092,029.40/981,372,673,303.47 = 385,978,450,877.94/x
  3. Step 3: Cross multiply
    711,139,092,029.40x = 981,372,673,303.47 × 385,978,450,877.94
  4. Step 4: Simplify right side
    711,139,092,029.40x = 378,788,704,175,616,012,845,056
  5. Step 5: Solve for x
    x = 378,788,704,175,616,012,845,056/711,139,092,029.40
  6. Step 6: Final answer
    x = 532,650,656,420.33

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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.