Home / 919,303,394.20-1,378,955,091.30-305,949,621.40

Finding the Fourth Proportional to 919,303,394.20, 1,378,955,091.30 and 305,949,621.40

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Solution

The fourth proportional to 919,303,394.20, 1,378,955,091.30 and 305,949,621.40 is: 458,924,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,303,394.20 : 1,378,955,091.30 = 305,949,621.40 : x
  2. Step 2: Convert to fraction form
    919,303,394.20/1,378,955,091.30 = 305,949,621.40/x
  3. Step 3: Cross multiply
    919,303,394.20x = 1,378,955,091.30 × 305,949,621.40
  4. Step 4: Simplify right side
    919,303,394.20x = 421,890,788,110,837,376
  5. Step 5: Solve for x
    x = 421,890,788,110,837,376/919,303,394.20
  6. Step 6: Final answer
    x = 458,924,432.10

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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.