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Finding the Fourth Proportional to 660,745.16, 911,810.60 and 374,357.51

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Solution

The fourth proportional to 660,745.16, 911,810.60 and 374,357.51 is: 516,603.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,745.16 : 911,810.60 = 374,357.51 : x
  2. Step 2: Convert to fraction form
    660,745.16/911,810.60 = 374,357.51/x
  3. Step 3: Cross multiply
    660,745.16x = 911,810.60 × 374,357.51
  4. Step 4: Simplify right side
    660,745.16x = 341,343,144,199.90
  5. Step 5: Solve for x
    x = 341,343,144,199.90/660,745.16
  6. Step 6: Final answer
    x = 516,603.32

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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.