Home / 679,740.48-1,019,014.56-258,736.32

Finding the Fourth Proportional to 679,740.48, 1,019,014.56 and 258,736.32

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Solution

The fourth proportional to 679,740.48, 1,019,014.56 and 258,736.32 is: 387,877.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,740.48 : 1,019,014.56 = 258,736.32 : x
  2. Step 2: Convert to fraction form
    679,740.48/1,019,014.56 = 258,736.32/x
  3. Step 3: Cross multiply
    679,740.48x = 1,019,014.56 × 258,736.32
  4. Step 4: Simplify right side
    679,740.48x = 263,656,077,280.82
  5. Step 5: Solve for x
    x = 263,656,077,280.82/679,740.48
  6. Step 6: Final answer
    x = 387,877.56

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1.5x scale

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.