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Finding the Fourth Proportional to 565,804.33, 780,794.40 and 311,155.51

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Solution

The fourth proportional to 565,804.33, 780,794.40 and 311,155.51 is: 429,386.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,804.33 : 780,794.40 = 311,155.51 : x
  2. Step 2: Convert to fraction form
    565,804.33/780,794.40 = 311,155.51/x
  3. Step 3: Cross multiply
    565,804.33x = 780,794.40 × 311,155.51
  4. Step 4: Simplify right side
    565,804.33x = 242,948,479,737.14
  5. Step 5: Solve for x
    x = 242,948,479,737.14/565,804.33
  6. Step 6: Final answer
    x = 429,386.04

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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.