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Finding the Fourth Proportional to 572,405.70, 858,608.55 and 530,415.30

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Solution

The fourth proportional to 572,405.70, 858,608.55 and 530,415.30 is: 795,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,405.70 : 858,608.55 = 530,415.30 : x
  2. Step 2: Convert to fraction form
    572,405.70/858,608.55 = 530,415.30/x
  3. Step 3: Cross multiply
    572,405.70x = 858,608.55 × 530,415.30
  4. Step 4: Simplify right side
    572,405.70x = 455,419,111,630.82
  5. Step 5: Solve for x
    x = 455,419,111,630.82/572,405.70
  6. Step 6: Final answer
    x = 795,622.95

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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.