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Finding the Fourth Proportional to 572,821.70, 860,150.55 and 455,468.90

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Solution

The fourth proportional to 572,821.70, 860,150.55 and 455,468.90 is: 683,933.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,821.70 : 860,150.55 = 455,468.90 : x
  2. Step 2: Convert to fraction form
    572,821.70/860,150.55 = 455,468.90/x
  3. Step 3: Cross multiply
    572,821.70x = 860,150.55 × 455,468.90
  4. Step 4: Simplify right side
    572,821.70x = 391,771,824,842.90
  5. Step 5: Solve for x
    x = 391,771,824,842.90/572,821.70
  6. Step 6: Final answer
    x = 683,933.28

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Double scale
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1.5x scale

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.