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Finding the Fourth Proportional to 949,158,019.40, 1,329,728,219.80 and 949,158,019.40

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Solution

The fourth proportional to 949,158,019.40, 1,329,728,219.80 and 949,158,019.40 is: 1,329,728,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    949,158,019.40 : 1,329,728,219.80 = 949,158,019.40 : x
  2. Step 2: Convert to fraction form
    949,158,019.40/1,329,728,219.80 = 949,158,019.40/x
  3. Step 3: Cross multiply
    949,158,019.40x = 1,329,728,219.80 × 949,158,019.40
  4. Step 4: Simplify right side
    949,158,019.40x = 1,262,122,203,445,655,808
  5. Step 5: Solve for x
    x = 1,262,122,203,445,655,808/949,158,019.40
  6. Step 6: Final answer
    x = 1,329,728,219.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.