Home / 28,339,235,978.91-39,107,888,184.33-15,478,873,263.33

Finding the Fourth Proportional to 28,339,235,978.91, 39,107,888,184.33 and 15,478,873,263.33

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Solution

The fourth proportional to 28,339,235,978.91, 39,107,888,184.33 and 15,478,873,263.33 is: 21,360,704,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339,235,978.91 : 39,107,888,184.33 = 15,478,873,263.33 : x
  2. Step 2: Convert to fraction form
    28,339,235,978.91/39,107,888,184.33 = 15,478,873,263.33/x
  3. Step 3: Cross multiply
    28,339,235,978.91x = 39,107,888,184.33 × 15,478,873,263.33
  4. Step 4: Simplify right side
    28,339,235,978.91x = 605,346,044,801,724,841,984
  5. Step 5: Solve for x
    x = 605,346,044,801,724,841,984/28,339,235,978.91
  6. Step 6: Final answer
    x = 21,360,704,475.32

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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.