Home / 780,026.40-1,170,039.60-509,421.60

Finding the Fourth Proportional to 780,026.40, 1,170,039.60 and 509,421.60

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Solution

The fourth proportional to 780,026.40, 1,170,039.60 and 509,421.60 is: 764,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,026.40 : 1,170,039.60 = 509,421.60 : x
  2. Step 2: Convert to fraction form
    780,026.40/1,170,039.60 = 509,421.60/x
  3. Step 3: Cross multiply
    780,026.40x = 1,170,039.60 × 509,421.60
  4. Step 4: Simplify right side
    780,026.40x = 596,043,445,095.36
  5. Step 5: Solve for x
    x = 596,043,445,095.36/780,026.40
  6. Step 6: Final answer
    x = 764,132.40

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Similar ratio
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1.5x scale

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.