Home / 861,030.07-1,291,835.52-381,191.60

Finding the Fourth Proportional to 861,030.07, 1,291,835.52 and 381,191.60

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Solution

The fourth proportional to 861,030.07, 1,291,835.52 and 381,191.60 is: 571,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,030.07 : 1,291,835.52 = 381,191.60 : x
  2. Step 2: Convert to fraction form
    861,030.07/1,291,835.52 = 381,191.60/x
  3. Step 3: Cross multiply
    861,030.07x = 1,291,835.52 × 381,191.60
  4. Step 4: Simplify right side
    861,030.07x = 492,436,852,035.22
  5. Step 5: Solve for x
    x = 492,436,852,035.22/861,030.07
  6. Step 6: Final answer
    x = 571,915.98

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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.