Home / 699,159,662,313.51-964,830,065,814.84-390,515,525,587.56

Finding the Fourth Proportional to 699,159,662,313.51, 964,830,065,814.84 and 390,515,525,587.56

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Solution

The fourth proportional to 699,159,662,313.51, 964,830,065,814.84 and 390,515,525,587.56 is: 538,905,690,021.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,662,313.51 : 964,830,065,814.84 = 390,515,525,587.56 : x
  2. Step 2: Convert to fraction form
    699,159,662,313.51/964,830,065,814.84 = 390,515,525,587.56/x
  3. Step 3: Cross multiply
    699,159,662,313.51x = 964,830,065,814.84 × 390,515,525,587.56
  4. Step 4: Simplify right side
    699,159,662,313.51x = 376,781,120,254,362,322,468,864
  5. Step 5: Solve for x
    x = 376,781,120,254,362,322,468,864/699,159,662,313.51
  6. Step 6: Final answer
    x = 538,905,690,021.65

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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.