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Finding the Fourth Proportional to 1,295,116,978.12, 1,787,266,814.62 and 700,401,462.46

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Solution

The fourth proportional to 1,295,116,978.12, 1,787,266,814.62 and 700,401,462.46 is: 966,556,930.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,116,978.12 : 1,787,266,814.62 = 700,401,462.46 : x
  2. Step 2: Convert to fraction form
    1,295,116,978.12/1,787,266,814.62 = 700,401,462.46/x
  3. Step 3: Cross multiply
    1,295,116,978.12x = 1,787,266,814.62 × 700,401,462.46
  4. Step 4: Simplify right side
    1,295,116,978.12x = 1,251,804,290,766,073,600
  5. Step 5: Solve for x
    x = 1,251,804,290,766,073,600/1,295,116,978.12
  6. Step 6: Final answer
    x = 966,556,930.31

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1.5x scale

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.