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Finding the Fourth Proportional to 879,812.32, 1,319,455.04 and 458,858.56

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Solution

The fourth proportional to 879,812.32, 1,319,455.04 and 458,858.56 is: 688,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,812.32 : 1,319,455.04 = 458,858.56 : x
  2. Step 2: Convert to fraction form
    879,812.32/1,319,455.04 = 458,858.56/x
  3. Step 3: Cross multiply
    879,812.32x = 1,319,455.04 × 458,858.56
  4. Step 4: Simplify right side
    879,812.32x = 605,443,239,639.14
  5. Step 5: Solve for x
    x = 605,443,239,639.14/879,812.32
  6. Step 6: Final answer
    x = 688,150.45

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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.