Home / 759,699.61-1,139,128.69-310,735.78

Finding the Fourth Proportional to 759,699.61, 1,139,128.69 and 310,735.78

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Solution

The fourth proportional to 759,699.61, 1,139,128.69 and 310,735.78 is: 465,931.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,699.61 : 1,139,128.69 = 310,735.78 : x
  2. Step 2: Convert to fraction form
    759,699.61/1,139,128.69 = 310,735.78/x
  3. Step 3: Cross multiply
    759,699.61x = 1,139,128.69 × 310,735.78
  4. Step 4: Simplify right side
    759,699.61x = 353,968,042,007.53
  5. Step 5: Solve for x
    x = 353,968,042,007.53/759,699.61
  6. Step 6: Final answer
    x = 465,931.58

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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.