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Finding the Fourth Proportional to 570,994.88, 787,998.74 and 316,346.09

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Solution

The fourth proportional to 570,994.88, 787,998.74 and 316,346.09 is: 436,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,994.88 : 787,998.74 = 316,346.09 : x
  2. Step 2: Convert to fraction form
    570,994.88/787,998.74 = 316,346.09/x
  3. Step 3: Cross multiply
    570,994.88x = 787,998.74 × 316,346.09
  4. Step 4: Simplify right side
    570,994.88x = 249,280,314,802.20
  5. Step 5: Solve for x
    x = 249,280,314,802.20/570,994.88
  6. Step 6: Final answer
    x = 436,571.90

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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.