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Finding the Fourth Proportional to 565,447.51, 780,328.71 and 310,822.39

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Solution

The fourth proportional to 565,447.51, 780,328.71 and 310,822.39 is: 428,941.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,447.51 : 780,328.71 = 310,822.39 : x
  2. Step 2: Convert to fraction form
    565,447.51/780,328.71 = 310,822.39/x
  3. Step 3: Cross multiply
    565,447.51x = 780,328.71 × 310,822.39
  4. Step 4: Simplify right side
    565,447.51x = 242,543,629,172.06
  5. Step 5: Solve for x
    x = 242,543,629,172.06/565,447.51
  6. Step 6: Final answer
    x = 428,941.02

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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.