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Finding the Fourth Proportional to 565,389.60, 780,228.59 and 310,735.32

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Solution

The fourth proportional to 565,389.60, 780,228.59 and 310,735.32 is: 428,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,389.60 : 780,228.59 = 310,735.32 : x
  2. Step 2: Convert to fraction form
    565,389.60/780,228.59 = 310,735.32/x
  3. Step 3: Cross multiply
    565,389.60x = 780,228.59 × 310,735.32
  4. Step 4: Simplify right side
    565,389.60x = 242,444,581,363.64
  5. Step 5: Solve for x
    x = 242,444,581,363.64/565,389.60
  6. Step 6: Final answer
    x = 428,809.76

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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.