Home / 672,606,629.60-1,008,909,944.40-309,100,985.60

Finding the Fourth Proportional to 672,606,629.60, 1,008,909,944.40 and 309,100,985.60

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Solution

The fourth proportional to 672,606,629.60, 1,008,909,944.40 and 309,100,985.60 is: 463,651,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,606,629.60 : 1,008,909,944.40 = 309,100,985.60 : x
  2. Step 2: Convert to fraction form
    672,606,629.60/1,008,909,944.40 = 309,100,985.60/x
  3. Step 3: Cross multiply
    672,606,629.60x = 1,008,909,944.40 × 309,100,985.60
  4. Step 4: Simplify right side
    672,606,629.60x = 311,855,058,195,681,216
  5. Step 5: Solve for x
    x = 311,855,058,195,681,216/672,606,629.60
  6. Step 6: Final answer
    x = 463,651,478.40

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1.5x scale

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.