Home / 910,657.60-1,365,986.40-319,604.80

Finding the Fourth Proportional to 910,657.60, 1,365,986.40 and 319,604.80

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Solution

The fourth proportional to 910,657.60, 1,365,986.40 and 319,604.80 is: 479,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,657.60 : 1,365,986.40 = 319,604.80 : x
  2. Step 2: Convert to fraction form
    910,657.60/1,365,986.40 = 319,604.80/x
  3. Step 3: Cross multiply
    910,657.60x = 1,365,986.40 × 319,604.80
  4. Step 4: Simplify right side
    910,657.60x = 436,575,810,174.72
  5. Step 5: Solve for x
    x = 436,575,810,174.72/910,657.60
  6. Step 6: Final answer
    x = 479,407.20

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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.