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Finding the Fourth Proportional to 567,408.76, 783,000.53 and 309,280.03

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Solution

The fourth proportional to 567,408.76, 783,000.53 and 309,280.03 is: 426,793.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,408.76 : 783,000.53 = 309,280.03 : x
  2. Step 2: Convert to fraction form
    567,408.76/783,000.53 = 309,280.03/x
  3. Step 3: Cross multiply
    567,408.76x = 783,000.53 × 309,280.03
  4. Step 4: Simplify right side
    567,408.76x = 242,166,425,832.31
  5. Step 5: Solve for x
    x = 242,166,425,832.31/567,408.76
  6. Step 6: Final answer
    x = 426,793.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.