Home / 1,268,386.60-1,902,579.90-520,047.40

Finding the Fourth Proportional to 1,268,386.60, 1,902,579.90 and 520,047.40

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Solution

The fourth proportional to 1,268,386.60, 1,902,579.90 and 520,047.40 is: 780,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,386.60 : 1,902,579.90 = 520,047.40 : x
  2. Step 2: Convert to fraction form
    1,268,386.60/1,902,579.90 = 520,047.40/x
  3. Step 3: Cross multiply
    1,268,386.60x = 1,902,579.90 × 520,047.40
  4. Step 4: Simplify right side
    1,268,386.60x = 989,431,730,287.26
  5. Step 5: Solve for x
    x = 989,431,730,287.26/1,268,386.60
  6. Step 6: Final answer
    x = 780,071.10

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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.