Home / 1,557,128.40-2,335,404.60-434,965.20

Finding the Fourth Proportional to 1,557,128.40, 2,335,404.60 and 434,965.20

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Solution

The fourth proportional to 1,557,128.40, 2,335,404.60 and 434,965.20 is: 652,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,128.40 : 2,335,404.60 = 434,965.20 : x
  2. Step 2: Convert to fraction form
    1,557,128.40/2,335,404.60 = 434,965.20/x
  3. Step 3: Cross multiply
    1,557,128.40x = 2,335,404.60 × 434,965.20
  4. Step 4: Simplify right side
    1,557,128.40x = 1,015,819,728,919.92
  5. Step 5: Solve for x
    x = 1,015,819,728,919.92/1,557,128.40
  6. Step 6: Final answer
    x = 652,367.35

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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.