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Finding the Fourth Proportional to 569,929.55, 786,499.90 and 311,801.83

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Solution

The fourth proportional to 569,929.55, 786,499.90 and 311,801.83 is: 430,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,929.55 : 786,499.90 = 311,801.83 : x
  2. Step 2: Convert to fraction form
    569,929.55/786,499.90 = 311,801.83/x
  3. Step 3: Cross multiply
    569,929.55x = 786,499.90 × 311,801.83
  4. Step 4: Simplify right side
    569,929.55x = 245,232,105,369.06
  5. Step 5: Solve for x
    x = 245,232,105,369.06/569,929.55
  6. Step 6: Final answer
    x = 430,284.95

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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.