Home / 1,336,991.52-2,005,272.36-390,140.40

Finding the Fourth Proportional to 1,336,991.52, 2,005,272.36 and 390,140.40

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Solution

The fourth proportional to 1,336,991.52, 2,005,272.36 and 390,140.40 is: 585,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,991.52 : 2,005,272.36 = 390,140.40 : x
  2. Step 2: Convert to fraction form
    1,336,991.52/2,005,272.36 = 390,140.40/x
  3. Step 3: Cross multiply
    1,336,991.52x = 2,005,272.36 × 390,140.40
  4. Step 4: Simplify right side
    1,336,991.52x = 782,337,760,639.34
  5. Step 5: Solve for x
    x = 782,337,760,639.34/1,336,991.52
  6. Step 6: Final answer
    x = 585,147.89

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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.