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Finding the Fourth Proportional to 572,830.20, 860,163.30 and 455,477.40

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Solution

The fourth proportional to 572,830.20, 860,163.30 and 455,477.40 is: 683,946.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,830.20 : 860,163.30 = 455,477.40 : x
  2. Step 2: Convert to fraction form
    572,830.20/860,163.30 = 455,477.40/x
  3. Step 3: Cross multiply
    572,830.20x = 860,163.30 × 455,477.40
  4. Step 4: Simplify right side
    572,830.20x = 391,784,943,459.42
  5. Step 5: Solve for x
    x = 391,784,943,459.42/572,830.20
  6. Step 6: Final answer
    x = 683,946.03

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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.