Home / 672,579,419.40-1,008,869,129.10-412,952,776.20

Finding the Fourth Proportional to 672,579,419.40, 1,008,869,129.10 and 412,952,776.20

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Solution

The fourth proportional to 672,579,419.40, 1,008,869,129.10 and 412,952,776.20 is: 619,429,164.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,579,419.40 : 1,008,869,129.10 = 412,952,776.20 : x
  2. Step 2: Convert to fraction form
    672,579,419.40/1,008,869,129.10 = 412,952,776.20/x
  3. Step 3: Cross multiply
    672,579,419.40x = 1,008,869,129.10 × 412,952,776.20
  4. Step 4: Simplify right side
    672,579,419.40x = 416,615,307,684,321,216
  5. Step 5: Solve for x
    x = 416,615,307,684,321,216/672,579,419.40
  6. Step 6: Final answer
    x = 619,429,164.30

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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.