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Finding the Fourth Proportional to 652,030.60, 978,045.90 and 612,664.60

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Solution

The fourth proportional to 652,030.60, 978,045.90 and 612,664.60 is: 918,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,030.60 : 978,045.90 = 612,664.60 : x
  2. Step 2: Convert to fraction form
    652,030.60/978,045.90 = 612,664.60/x
  3. Step 3: Cross multiply
    652,030.60x = 978,045.90 × 612,664.60
  4. Step 4: Simplify right side
    652,030.60x = 599,214,100,105.14
  5. Step 5: Solve for x
    x = 599,214,100,105.14/652,030.60
  6. Step 6: Final answer
    x = 918,996.90

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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.