Home / 690,649.74-1,036,115.55-291,289.77

Finding the Fourth Proportional to 690,649.74, 1,036,115.55 and 291,289.77

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Solution

The fourth proportional to 690,649.74, 1,036,115.55 and 291,289.77 is: 436,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,649.74 : 1,036,115.55 = 291,289.77 : x
  2. Step 2: Convert to fraction form
    690,649.74/1,036,115.55 = 291,289.77/x
  3. Step 3: Cross multiply
    690,649.74x = 1,036,115.55 × 291,289.77
  4. Step 4: Simplify right side
    690,649.74x = 301,809,860,252.92
  5. Step 5: Solve for x
    x = 301,809,860,252.92/690,649.74
  6. Step 6: Final answer
    x = 436,994.10

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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.