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Finding the Fourth Proportional to 990,144,528.90, 1,485,216,793.35 and 990,144,528.90

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Solution

The fourth proportional to 990,144,528.90, 1,485,216,793.35 and 990,144,528.90 is: 1,485,216,793.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,144,528.90 : 1,485,216,793.35 = 990,144,528.90 : x
  2. Step 2: Convert to fraction form
    990,144,528.90/1,485,216,793.35 = 990,144,528.90/x
  3. Step 3: Cross multiply
    990,144,528.90x = 1,485,216,793.35 × 990,144,528.90
  4. Step 4: Simplify right side
    990,144,528.90x = 1,470,579,282,165,904,384
  5. Step 5: Solve for x
    x = 1,470,579,282,165,904,384/990,144,528.90
  6. Step 6: Final answer
    x = 1,485,216,793.35

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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.