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Finding the Fourth Proportional to 565,503.52, 780,395.70 and 310,856.26

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Solution

The fourth proportional to 565,503.52, 780,395.70 and 310,856.26 is: 428,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,503.52 : 780,395.70 = 310,856.26 : x
  2. Step 2: Convert to fraction form
    565,503.52/780,395.70 = 310,856.26/x
  3. Step 3: Cross multiply
    565,503.52x = 780,395.70 × 310,856.26
  4. Step 4: Simplify right side
    565,503.52x = 242,590,888,622.08
  5. Step 5: Solve for x
    x = 242,590,888,622.08/565,503.52
  6. Step 6: Final answer
    x = 428,982.10

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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.