Home / 491,734,546.80-678,632,357.64-280,050,328.08

Finding the Fourth Proportional to 491,734,546.80, 678,632,357.64 and 280,050,328.08

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Solution

The fourth proportional to 491,734,546.80, 678,632,357.64 and 280,050,328.08 is: 386,491,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,734,546.80 : 678,632,357.64 = 280,050,328.08 : x
  2. Step 2: Convert to fraction form
    491,734,546.80/678,632,357.64 = 280,050,328.08/x
  3. Step 3: Cross multiply
    491,734,546.80x = 678,632,357.64 × 280,050,328.08
  4. Step 4: Simplify right side
    491,734,546.80x = 190,051,214,402,785,888
  5. Step 5: Solve for x
    x = 190,051,214,402,785,888/491,734,546.80
  6. Step 6: Final answer
    x = 386,491,483.34

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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.