Home / 875,179,928.64-1,207,734,108.12-478,699,449.92

Finding the Fourth Proportional to 875,179,928.64, 1,207,734,108.12 and 478,699,449.92

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Solution

The fourth proportional to 875,179,928.64, 1,207,734,108.12 and 478,699,449.92 is: 660,597,477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,179,928.64 : 1,207,734,108.12 = 478,699,449.92 : x
  2. Step 2: Convert to fraction form
    875,179,928.64/1,207,734,108.12 = 478,699,449.92/x
  3. Step 3: Cross multiply
    875,179,928.64x = 1,207,734,108.12 × 478,699,449.92
  4. Step 4: Simplify right side
    875,179,928.64x = 578,141,653,200,627,072
  5. Step 5: Solve for x
    x = 578,141,653,200,627,072/875,179,928.64
  6. Step 6: Final answer
    x = 660,597,477.48

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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.