Home / 851,011,115.80-1,276,516,673.70-305,770,437.40

Finding the Fourth Proportional to 851,011,115.80, 1,276,516,673.70 and 305,770,437.40

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Solution

The fourth proportional to 851,011,115.80, 1,276,516,673.70 and 305,770,437.40 is: 458,655,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,011,115.80 : 1,276,516,673.70 = 305,770,437.40 : x
  2. Step 2: Convert to fraction form
    851,011,115.80/1,276,516,673.70 = 305,770,437.40/x
  3. Step 3: Cross multiply
    851,011,115.80x = 1,276,516,673.70 × 305,770,437.40
  4. Step 4: Simplify right side
    851,011,115.80x = 390,321,061,665,642,048
  5. Step 5: Solve for x
    x = 390,321,061,665,642,048/851,011,115.80
  6. Step 6: Final answer
    x = 458,655,656.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.