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Finding the Fourth Proportional to 630,399.93, 869,947.70 and 358,467.84

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Solution

The fourth proportional to 630,399.93, 869,947.70 and 358,467.84 is: 494,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,399.93 : 869,947.70 = 358,467.84 : x
  2. Step 2: Convert to fraction form
    630,399.93/869,947.70 = 358,467.84/x
  3. Step 3: Cross multiply
    630,399.93x = 869,947.70 × 358,467.84
  4. Step 4: Simplify right side
    630,399.93x = 311,848,271,139.63
  5. Step 5: Solve for x
    x = 311,848,271,139.63/630,399.93
  6. Step 6: Final answer
    x = 494,683.23

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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.