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Finding the Fourth Proportional to 647,360.51, 893,410.71 and 357,028.87

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Solution

The fourth proportional to 647,360.51, 893,410.71 and 357,028.87 is: 492,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,360.51 : 893,410.71 = 357,028.87 : x
  2. Step 2: Convert to fraction form
    647,360.51/893,410.71 = 357,028.87/x
  3. Step 3: Cross multiply
    647,360.51x = 893,410.71 × 357,028.87
  4. Step 4: Simplify right side
    647,360.51x = 318,973,416,237.20
  5. Step 5: Solve for x
    x = 318,973,416,237.20/647,360.51
  6. Step 6: Final answer
    x = 492,729.18

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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.