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Finding the Fourth Proportional to 651,428.80, 977,110.80 and 335,917.60

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Solution

The fourth proportional to 651,428.80, 977,110.80 and 335,917.60 is: 503,859.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,428.80 : 977,110.80 = 335,917.60 : x
  2. Step 2: Convert to fraction form
    651,428.80/977,110.80 = 335,917.60/x
  3. Step 3: Cross multiply
    651,428.80x = 977,110.80 × 335,917.60
  4. Step 4: Simplify right side
    651,428.80x = 328,228,714,870.08
  5. Step 5: Solve for x
    x = 328,228,714,870.08/651,428.80
  6. Step 6: Final answer
    x = 503,859.69

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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.