Home / 2,121,989.35-2,928,345.67-1,155,126.98

Finding the Fourth Proportional to 2,121,989.35, 2,928,345.67 and 1,155,126.98

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Solution

The fourth proportional to 2,121,989.35, 2,928,345.67 and 1,155,126.98 is: 1,594,075.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,989.35 : 2,928,345.67 = 1,155,126.98 : x
  2. Step 2: Convert to fraction form
    2,121,989.35/2,928,345.67 = 1,155,126.98/x
  3. Step 3: Cross multiply
    2,121,989.35x = 2,928,345.67 × 1,155,126.98
  4. Step 4: Simplify right side
    2,121,989.35x = 3,382,611,069,765.81
  5. Step 5: Solve for x
    x = 3,382,611,069,765.81/2,121,989.35
  6. Step 6: Final answer
    x = 1,594,075.42

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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.