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Finding the Fourth Proportional to 607,032.60, 909,965.70 and 472,021.80

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Solution

The fourth proportional to 607,032.60, 909,965.70 and 472,021.80 is: 707,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,032.60 : 909,965.70 = 472,021.80 : x
  2. Step 2: Convert to fraction form
    607,032.60/909,965.70 = 472,021.80/x
  3. Step 3: Cross multiply
    607,032.60x = 909,965.70 × 472,021.80
  4. Step 4: Simplify right side
    607,032.60x = 429,523,647,652.26
  5. Step 5: Solve for x
    x = 429,523,647,652.26/607,032.60
  6. Step 6: Final answer
    x = 707,579.21

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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.