Home / 1,020,309,873.19-1,530,707,661.65-330,217,128.07

Finding the Fourth Proportional to 1,020,309,873.19, 1,530,707,661.65 and 330,217,128.07

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Solution

The fourth proportional to 1,020,309,873.19, 1,530,707,661.65 and 330,217,128.07 is: 495,404,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,309,873.19 : 1,530,707,661.65 = 330,217,128.07 : x
  2. Step 2: Convert to fraction form
    1,020,309,873.19/1,530,707,661.65 = 330,217,128.07/x
  3. Step 3: Cross multiply
    1,020,309,873.19x = 1,530,707,661.65 × 330,217,128.07
  4. Step 4: Simplify right side
    1,020,309,873.19x = 505,465,887,944,808,320
  5. Step 5: Solve for x
    x = 505,465,887,944,808,320/1,020,309,873.19
  6. Step 6: Final answer
    x = 495,404,289.64

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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.