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Finding the Fourth Proportional to 580,021.80, 872,106.30 and 488,783.40

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Solution

The fourth proportional to 580,021.80, 872,106.30 and 488,783.40 is: 734,922.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,021.80 : 872,106.30 = 488,783.40 : x
  2. Step 2: Convert to fraction form
    580,021.80/872,106.30 = 488,783.40/x
  3. Step 3: Cross multiply
    580,021.80x = 872,106.30 × 488,783.40
  4. Step 4: Simplify right side
    580,021.80x = 426,271,082,475.42
  5. Step 5: Solve for x
    x = 426,271,082,475.42/580,021.80
  6. Step 6: Final answer
    x = 734,922.52

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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.