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Finding the Fourth Proportional to 656,881.07, 906,495.44 and 355,075.07

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Solution

The fourth proportional to 656,881.07, 906,495.44 and 355,075.07 is: 490,003.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,881.07 : 906,495.44 = 355,075.07 : x
  2. Step 2: Convert to fraction form
    656,881.07/906,495.44 = 355,075.07/x
  3. Step 3: Cross multiply
    656,881.07x = 906,495.44 × 355,075.07
  4. Step 4: Simplify right side
    656,881.07x = 321,873,925,504.83
  5. Step 5: Solve for x
    x = 321,873,925,504.83/656,881.07
  6. Step 6: Final answer
    x = 490,003.35

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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.