Home / 2,121,878.79-2,928,230.12-1,155,036.87

Finding the Fourth Proportional to 2,121,878.79, 2,928,230.12 and 1,155,036.87

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Solution

The fourth proportional to 2,121,878.79, 2,928,230.12 and 1,155,036.87 is: 1,593,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,878.79 : 2,928,230.12 = 1,155,036.87 : x
  2. Step 2: Convert to fraction form
    2,121,878.79/2,928,230.12 = 1,155,036.87/x
  3. Step 3: Cross multiply
    2,121,878.79x = 2,928,230.12 × 1,155,036.87
  4. Step 4: Simplify right side
    2,121,878.79x = 3,382,213,746,669.34
  5. Step 5: Solve for x
    x = 3,382,213,746,669.34/2,121,878.79
  6. Step 6: Final answer
    x = 1,593,971.23

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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.