Home / 786,807,085.10-1,086,283,796.70-500,859,953.12

Finding the Fourth Proportional to 786,807,085.10, 1,086,283,796.70 and 500,859,953.12

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Solution

The fourth proportional to 786,807,085.10, 1,086,283,796.70 and 500,859,953.12 is: 691,498,668.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,807,085.10 : 1,086,283,796.70 = 500,859,953.12 : x
  2. Step 2: Convert to fraction form
    786,807,085.10/1,086,283,796.70 = 500,859,953.12/x
  3. Step 3: Cross multiply
    786,807,085.10x = 1,086,283,796.70 × 500,859,953.12
  4. Step 4: Simplify right side
    786,807,085.10x = 544,076,051,490,177,664
  5. Step 5: Solve for x
    x = 544,076,051,490,177,664/786,807,085.10
  6. Step 6: Final answer
    x = 691,498,668.22

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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.