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Finding the Fourth Proportional to 572,801.70, 860,120.55 and 455,448.90

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Solution

The fourth proportional to 572,801.70, 860,120.55 and 455,448.90 is: 683,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,801.70 : 860,120.55 = 455,448.90 : x
  2. Step 2: Convert to fraction form
    572,801.70/860,120.55 = 455,448.90/x
  3. Step 3: Cross multiply
    572,801.70x = 860,120.55 × 455,448.90
  4. Step 4: Simplify right side
    572,801.70x = 391,740,958,364.90
  5. Step 5: Solve for x
    x = 391,740,958,364.90/572,801.70
  6. Step 6: Final answer
    x = 683,903.27

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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.