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Finding the Fourth Proportional to 652,158.20, 978,237.30 and 402,980.60

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Solution

The fourth proportional to 652,158.20, 978,237.30 and 402,980.60 is: 604,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,158.20 : 978,237.30 = 402,980.60 : x
  2. Step 2: Convert to fraction form
    652,158.20/978,237.30 = 402,980.60/x
  3. Step 3: Cross multiply
    652,158.20x = 978,237.30 × 402,980.60
  4. Step 4: Simplify right side
    652,158.20x = 394,210,654,096.38
  5. Step 5: Solve for x
    x = 394,210,654,096.38/652,158.20
  6. Step 6: Final answer
    x = 604,470.90

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