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Finding the Fourth Proportional to 524,370, 786,557.88 and 130,386

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Solution

The fourth proportional to 524,370, 786,557.88 and 130,386 is: 195,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,370 : 786,557.88 = 130,386 : x
  2. Step 2: Convert to fraction form
    524,370/786,557.88 = 130,386/x
  3. Step 3: Cross multiply
    524,370x = 786,557.88 × 130,386
  4. Step 4: Simplify right side
    524,370x = 102,556,135,741.68
  5. Step 5: Solve for x
    x = 102,556,135,741.68/524,370
  6. Step 6: Final answer
    x = 195,579.72

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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.