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Finding the Fourth Proportional to 604,421.61, 905,489.47 and 357,207.54

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Solution

The fourth proportional to 604,421.61, 905,489.47 and 357,207.54 is: 535,135.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,421.61 : 905,489.47 = 357,207.54 : x
  2. Step 2: Convert to fraction form
    604,421.61/905,489.47 = 357,207.54/x
  3. Step 3: Cross multiply
    604,421.61x = 905,489.47 × 357,207.54
  4. Step 4: Simplify right side
    604,421.61x = 323,447,666,074.60
  5. Step 5: Solve for x
    x = 323,447,666,074.60/604,421.61
  6. Step 6: Final answer
    x = 535,135.84

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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.