Home / 929,712.16-1,395,315.60-480,564.72

Finding the Fourth Proportional to 929,712.16, 1,395,315.60 and 480,564.72

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Solution

The fourth proportional to 929,712.16, 1,395,315.60 and 480,564.72 is: 721,233.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,712.16 : 1,395,315.60 = 480,564.72 : x
  2. Step 2: Convert to fraction form
    929,712.16/1,395,315.60 = 480,564.72/x
  3. Step 3: Cross multiply
    929,712.16x = 1,395,315.60 × 480,564.72
  4. Step 4: Simplify right side
    929,712.16x = 670,539,450,625.63
  5. Step 5: Solve for x
    x = 670,539,450,625.63/929,712.16
  6. Step 6: Final answer
    x = 721,233.39

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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.