Home / 780,437.60-1,170,656.40-684,015.20

Finding the Fourth Proportional to 780,437.60, 1,170,656.40 and 684,015.20

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Solution

The fourth proportional to 780,437.60, 1,170,656.40 and 684,015.20 is: 1,026,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,437.60 : 1,170,656.40 = 684,015.20 : x
  2. Step 2: Convert to fraction form
    780,437.60/1,170,656.40 = 684,015.20/x
  3. Step 3: Cross multiply
    780,437.60x = 1,170,656.40 × 684,015.20
  4. Step 4: Simplify right side
    780,437.60x = 800,746,771,577.28
  5. Step 5: Solve for x
    x = 800,746,771,577.28/780,437.60
  6. Step 6: Final answer
    x = 1,026,022.80

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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.