Home / 698,762.78-1,047,396.77-319,114.60

Finding the Fourth Proportional to 698,762.78, 1,047,396.77 and 319,114.60

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Solution

The fourth proportional to 698,762.78, 1,047,396.77 and 319,114.60 is: 478,330.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,762.78 : 1,047,396.77 = 319,114.60 : x
  2. Step 2: Convert to fraction form
    698,762.78/1,047,396.77 = 319,114.60/x
  3. Step 3: Cross multiply
    698,762.78x = 1,047,396.77 × 319,114.60
  4. Step 4: Simplify right side
    698,762.78x = 334,239,597,085.78
  5. Step 5: Solve for x
    x = 334,239,597,085.78/698,762.78
  6. Step 6: Final answer
    x = 478,330.57

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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.