Home / 875,447.60-1,312,393.80-520,084.40

Finding the Fourth Proportional to 875,447.60, 1,312,393.80 and 520,084.40

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Solution

The fourth proportional to 875,447.60, 1,312,393.80 and 520,084.40 is: 779,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,447.60 : 1,312,393.80 = 520,084.40 : x
  2. Step 2: Convert to fraction form
    875,447.60/1,312,393.80 = 520,084.40/x
  3. Step 3: Cross multiply
    875,447.60x = 1,312,393.80 × 520,084.40
  4. Step 4: Simplify right side
    875,447.60x = 682,555,542,036.72
  5. Step 5: Solve for x
    x = 682,555,542,036.72/875,447.60
  6. Step 6: Final answer
    x = 779,664.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.