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Finding the Fourth Proportional to 572,802.70, 860,122.05 and 455,449.90

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Solution

The fourth proportional to 572,802.70, 860,122.05 and 455,449.90 is: 683,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,802.70 : 860,122.05 = 455,449.90 : x
  2. Step 2: Convert to fraction form
    572,802.70/860,122.05 = 455,449.90/x
  3. Step 3: Cross multiply
    572,802.70x = 860,122.05 × 455,449.90
  4. Step 4: Simplify right side
    572,802.70x = 391,742,501,660.30
  5. Step 5: Solve for x
    x = 391,742,501,660.30/572,802.70
  6. Step 6: Final answer
    x = 683,904.77

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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.