Home / 385,630.20-578,445.30-346,361.40

Finding the Fourth Proportional to 385,630.20, 578,445.30 and 346,361.40

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Solution

The fourth proportional to 385,630.20, 578,445.30 and 346,361.40 is: 519,542.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,630.20 : 578,445.30 = 346,361.40 : x
  2. Step 2: Convert to fraction form
    385,630.20/578,445.30 = 346,361.40/x
  3. Step 3: Cross multiply
    385,630.20x = 578,445.30 × 346,361.40
  4. Step 4: Simplify right side
    385,630.20x = 200,351,123,931.42
  5. Step 5: Solve for x
    x = 200,351,123,931.42/385,630.20
  6. Step 6: Final answer
    x = 519,542.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.