Home / 3,128,859.20-4,317,825.60-1,698,075.20

Finding the Fourth Proportional to 3,128,859.20, 4,317,825.60 and 1,698,075.20

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Solution

The fourth proportional to 3,128,859.20, 4,317,825.60 and 1,698,075.20 is: 2,343,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,859.20 : 4,317,825.60 = 1,698,075.20 : x
  2. Step 2: Convert to fraction form
    3,128,859.20/4,317,825.60 = 1,698,075.20/x
  3. Step 3: Cross multiply
    3,128,859.20x = 4,317,825.60 × 1,698,075.20
  4. Step 4: Simplify right side
    3,128,859.20x = 7,331,992,569,285.12
  5. Step 5: Solve for x
    x = 7,331,992,569,285.12/3,128,859.20
  6. Step 6: Final answer
    x = 2,343,343.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.