Home / 951,143.81-1,312,561.55-521,427.47

Finding the Fourth Proportional to 951,143.81, 1,312,561.55 and 521,427.47

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Solution

The fourth proportional to 951,143.81, 1,312,561.55 and 521,427.47 is: 719,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    951,143.81 : 1,312,561.55 = 521,427.47 : x
  2. Step 2: Convert to fraction form
    951,143.81/1,312,561.55 = 521,427.47/x
  3. Step 3: Cross multiply
    951,143.81x = 1,312,561.55 × 521,427.47
  4. Step 4: Simplify right side
    951,143.81x = 684,405,645,628.64
  5. Step 5: Solve for x
    x = 684,405,645,628.64/951,143.81
  6. Step 6: Final answer
    x = 719,560.64

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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.