Home / 435,421.40-653,132.10-329,133.20

Finding the Fourth Proportional to 435,421.40, 653,132.10 and 329,133.20

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Solution

The fourth proportional to 435,421.40, 653,132.10 and 329,133.20 is: 493,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,421.40 : 653,132.10 = 329,133.20 : x
  2. Step 2: Convert to fraction form
    435,421.40/653,132.10 = 329,133.20/x
  3. Step 3: Cross multiply
    435,421.40x = 653,132.10 × 329,133.20
  4. Step 4: Simplify right side
    435,421.40x = 214,967,458,095.72
  5. Step 5: Solve for x
    x = 214,967,458,095.72/435,421.40
  6. Step 6: Final answer
    x = 493,699.80

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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.