Home / 740,320.80-1,110,740.40-319,898.40

Finding the Fourth Proportional to 740,320.80, 1,110,740.40 and 319,898.40

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Solution

The fourth proportional to 740,320.80, 1,110,740.40 and 319,898.40 is: 479,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,320.80 : 1,110,740.40 = 319,898.40 : x
  2. Step 2: Convert to fraction form
    740,320.80/1,110,740.40 = 319,898.40/x
  3. Step 3: Cross multiply
    740,320.80x = 1,110,740.40 × 319,898.40
  4. Step 4: Simplify right side
    740,320.80x = 355,324,076,775.36
  5. Step 5: Solve for x
    x = 355,324,076,775.36/740,320.80
  6. Step 6: Final answer
    x = 479,959.60

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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.