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Finding the Fourth Proportional to 565,235.60, 780,024.94 and 310,603.19

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Solution

The fourth proportional to 565,235.60, 780,024.94 and 310,603.19 is: 428,632.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,235.60 : 780,024.94 = 310,603.19 : x
  2. Step 2: Convert to fraction form
    565,235.60/780,024.94 = 310,603.19/x
  3. Step 3: Cross multiply
    565,235.60x = 780,024.94 × 310,603.19
  4. Step 4: Simplify right side
    565,235.60x = 242,278,230,743.43
  5. Step 5: Solve for x
    x = 242,278,230,743.43/565,235.60
  6. Step 6: Final answer
    x = 428,632.30

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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.