Home / 819,129.48-1,130,403.93-456,576.32

Finding the Fourth Proportional to 819,129.48, 1,130,403.93 and 456,576.32

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Solution

The fourth proportional to 819,129.48, 1,130,403.93 and 456,576.32 is: 630,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,129.48 : 1,130,403.93 = 456,576.32 : x
  2. Step 2: Convert to fraction form
    819,129.48/1,130,403.93 = 456,576.32/x
  3. Step 3: Cross multiply
    819,129.48x = 1,130,403.93 × 456,576.32
  4. Step 4: Simplify right side
    819,129.48x = 516,115,667,586.79
  5. Step 5: Solve for x
    x = 516,115,667,586.79/819,129.48
  6. Step 6: Final answer
    x = 630,078.25

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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.