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Finding the Fourth Proportional to 565,804.58, 780,794.75 and 311,155.77

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Solution

The fourth proportional to 565,804.58, 780,794.75 and 311,155.77 is: 429,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,804.58 : 780,794.75 = 311,155.77 : x
  2. Step 2: Convert to fraction form
    565,804.58/780,794.75 = 311,155.77/x
  3. Step 3: Cross multiply
    565,804.58x = 780,794.75 × 311,155.77
  4. Step 4: Simplify right side
    565,804.58x = 242,948,790,092.43
  5. Step 5: Solve for x
    x = 242,948,790,092.43/565,804.58
  6. Step 6: Final answer
    x = 429,386.40

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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.