Home / 993,015.45-1,488,356.78-459,409.32

Finding the Fourth Proportional to 993,015.45, 1,488,356.78 and 459,409.32

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Solution

The fourth proportional to 993,015.45, 1,488,356.78 and 459,409.32 is: 688,574.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,015.45 : 1,488,356.78 = 459,409.32 : x
  2. Step 2: Convert to fraction form
    993,015.45/1,488,356.78 = 459,409.32/x
  3. Step 3: Cross multiply
    993,015.45x = 1,488,356.78 × 459,409.32
  4. Step 4: Simplify right side
    993,015.45x = 683,764,973,920.14
  5. Step 5: Solve for x
    x = 683,764,973,920.14/993,015.45
  6. Step 6: Final answer
    x = 688,574.36

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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.