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Finding the Fourth Proportional to 569,745.63, 786,262.75 and 311,646.83

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Solution

The fourth proportional to 569,745.63, 786,262.75 and 311,646.83 is: 430,080.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,745.63 : 786,262.75 = 311,646.83 : x
  2. Step 2: Convert to fraction form
    569,745.63/786,262.75 = 311,646.83/x
  3. Step 3: Cross multiply
    569,745.63x = 786,262.75 × 311,646.83
  4. Step 4: Simplify right side
    569,745.63x = 245,036,288,874.15
  5. Step 5: Solve for x
    x = 245,036,288,874.15/569,745.63
  6. Step 6: Final answer
    x = 430,080.16

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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.