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Finding the Fourth Proportional to 572,810.70, 860,134.05 and 455,457.90

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Solution

The fourth proportional to 572,810.70, 860,134.05 and 455,457.90 is: 683,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,810.70 : 860,134.05 = 455,457.90 : x
  2. Step 2: Convert to fraction form
    572,810.70/860,134.05 = 455,457.90/x
  3. Step 3: Cross multiply
    572,810.70x = 860,134.05 × 455,457.90
  4. Step 4: Simplify right side
    572,810.70x = 391,754,848,131.50
  5. Step 5: Solve for x
    x = 391,754,848,131.50/572,810.70
  6. Step 6: Final answer
    x = 683,916.78

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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.