Home / 711,139,092,036.65-981,372,673,313.48-385,978,450,885.18

Finding the Fourth Proportional to 711,139,092,036.65, 981,372,673,313.48 and 385,978,450,885.18

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Solution

The fourth proportional to 711,139,092,036.65, 981,372,673,313.48 and 385,978,450,885.18 is: 532,650,656,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139,092,036.65 : 981,372,673,313.48 = 385,978,450,885.18 : x
  2. Step 2: Convert to fraction form
    711,139,092,036.65/981,372,673,313.48 = 385,978,450,885.18/x
  3. Step 3: Cross multiply
    711,139,092,036.65x = 981,372,673,313.48 × 385,978,450,885.18
  4. Step 4: Simplify right side
    711,139,092,036.65x = 378,788,704,186,584,822,448,128
  5. Step 5: Solve for x
    x = 378,788,704,186,584,822,448,128/711,139,092,036.65
  6. Step 6: Final answer
    x = 532,650,656,430.32

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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.