Home / 740,072.96-1,021,740.72-485,869.76

Finding the Fourth Proportional to 740,072.96, 1,021,740.72 and 485,869.76

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Solution

The fourth proportional to 740,072.96, 1,021,740.72 and 485,869.76 is: 670,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,072.96 : 1,021,740.72 = 485,869.76 : x
  2. Step 2: Convert to fraction form
    740,072.96/1,021,740.72 = 485,869.76/x
  3. Step 3: Cross multiply
    740,072.96x = 1,021,740.72 × 485,869.76
  4. Step 4: Simplify right side
    740,072.96x = 496,432,918,408.63
  5. Step 5: Solve for x
    x = 496,432,918,408.63/740,072.96
  6. Step 6: Final answer
    x = 670,789.16

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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.