Home / 768,037.20-1,152,055.80-390,123.60

Finding the Fourth Proportional to 768,037.20, 1,152,055.80 and 390,123.60

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Solution

The fourth proportional to 768,037.20, 1,152,055.80 and 390,123.60 is: 585,185.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,037.20 : 1,152,055.80 = 390,123.60 : x
  2. Step 2: Convert to fraction form
    768,037.20/1,152,055.80 = 390,123.60/x
  3. Step 3: Cross multiply
    768,037.20x = 1,152,055.80 × 390,123.60
  4. Step 4: Simplify right side
    768,037.20x = 449,444,156,096.88
  5. Step 5: Solve for x
    x = 449,444,156,096.88/768,037.20
  6. Step 6: Final answer
    x = 585,185.40

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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.