Home / 679,731.42-938,010.65-373,807.79

Finding the Fourth Proportional to 679,731.42, 938,010.65 and 373,807.79

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Solution

The fourth proportional to 679,731.42, 938,010.65 and 373,807.79 is: 515,844.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,731.42 : 938,010.65 = 373,807.79 : x
  2. Step 2: Convert to fraction form
    679,731.42/938,010.65 = 373,807.79/x
  3. Step 3: Cross multiply
    679,731.42x = 938,010.65 × 373,807.79
  4. Step 4: Simplify right side
    679,731.42x = 350,635,686,203.93
  5. Step 5: Solve for x
    x = 350,635,686,203.93/679,731.42
  6. Step 6: Final answer
    x = 515,844.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.