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Finding the Fourth Proportional to 888,676.40, 1,333,014.60 and 390,040.40

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Solution

The fourth proportional to 888,676.40, 1,333,014.60 and 390,040.40 is: 585,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,676.40 : 1,333,014.60 = 390,040.40 : x
  2. Step 2: Convert to fraction form
    888,676.40/1,333,014.60 = 390,040.40/x
  3. Step 3: Cross multiply
    888,676.40x = 1,333,014.60 × 390,040.40
  4. Step 4: Simplify right side
    888,676.40x = 519,929,547,789.84
  5. Step 5: Solve for x
    x = 519,929,547,789.84/888,676.40
  6. Step 6: Final answer
    x = 585,060.60

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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.