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Finding the Fourth Proportional to 565,558.79, 780,486.03 and 310,916.39

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Solution

The fourth proportional to 565,558.79, 780,486.03 and 310,916.39 is: 429,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,558.79 : 780,486.03 = 310,916.39 : x
  2. Step 2: Convert to fraction form
    565,558.79/780,486.03 = 310,916.39/x
  3. Step 3: Cross multiply
    565,558.79x = 780,486.03 × 310,916.39
  4. Step 4: Simplify right side
    565,558.79x = 242,665,894,990.60
  5. Step 5: Solve for x
    x = 242,665,894,990.60/565,558.79
  6. Step 6: Final answer
    x = 429,072.81

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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.