Home / 1,915,403.47-2,643,354.56-1,055,961.69

Finding the Fourth Proportional to 1,915,403.47, 2,643,354.56 and 1,055,961.69

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Solution

The fourth proportional to 1,915,403.47, 2,643,354.56 and 1,055,961.69 is: 1,457,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,403.47 : 2,643,354.56 = 1,055,961.69 : x
  2. Step 2: Convert to fraction form
    1,915,403.47/2,643,354.56 = 1,055,961.69/x
  3. Step 3: Cross multiply
    1,915,403.47x = 2,643,354.56 × 1,055,961.69
  4. Step 4: Simplify right side
    1,915,403.47x = 2,791,281,148,446.81
  5. Step 5: Solve for x
    x = 2,791,281,148,446.81/1,915,403.47
  6. Step 6: Final answer
    x = 1,457,281.03

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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.