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Finding the Fourth Proportional to 652,338.40, 978,507.60 and 605,099.20

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Solution

The fourth proportional to 652,338.40, 978,507.60 and 605,099.20 is: 907,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,338.40 : 978,507.60 = 605,099.20 : x
  2. Step 2: Convert to fraction form
    652,338.40/978,507.60 = 605,099.20/x
  3. Step 3: Cross multiply
    652,338.40x = 978,507.60 × 605,099.20
  4. Step 4: Simplify right side
    652,338.40x = 592,094,165,953.92
  5. Step 5: Solve for x
    x = 592,094,165,953.92/652,338.40
  6. Step 6: Final answer
    x = 907,648.80

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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.