Home / 2,128,416.88-2,938,298.84-1,643,894.32

Finding the Fourth Proportional to 2,128,416.88, 2,938,298.84 and 1,643,894.32

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Solution

The fourth proportional to 2,128,416.88, 2,938,298.84 and 1,643,894.32 is: 2,269,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,416.88 : 2,938,298.84 = 1,643,894.32 : x
  2. Step 2: Convert to fraction form
    2,128,416.88/2,938,298.84 = 1,643,894.32/x
  3. Step 3: Cross multiply
    2,128,416.88x = 2,938,298.84 × 1,643,894.32
  4. Step 4: Simplify right side
    2,128,416.88x = 4,830,252,773,538.59
  5. Step 5: Solve for x
    x = 4,830,252,773,538.59/2,128,416.88
  6. Step 6: Final answer
    x = 2,269,411.04

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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.