Home / 1,339,328.16-2,009,067.12-428,590.08

Finding the Fourth Proportional to 1,339,328.16, 2,009,067.12 and 428,590.08

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Solution

The fourth proportional to 1,339,328.16, 2,009,067.12 and 428,590.08 is: 642,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,328.16 : 2,009,067.12 = 428,590.08 : x
  2. Step 2: Convert to fraction form
    1,339,328.16/2,009,067.12 = 428,590.08/x
  3. Step 3: Cross multiply
    1,339,328.16x = 2,009,067.12 × 428,590.08
  4. Step 4: Simplify right side
    1,339,328.16x = 861,066,237,686.17
  5. Step 5: Solve for x
    x = 861,066,237,686.17/1,339,328.16
  6. Step 6: Final answer
    x = 642,909.08

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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.