Home / 1,355,247.45-1,870,300.13-811,277.98

Finding the Fourth Proportional to 1,355,247.45, 1,870,300.13 and 811,277.98

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Solution

The fourth proportional to 1,355,247.45, 1,870,300.13 and 811,277.98 is: 1,119,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,247.45 : 1,870,300.13 = 811,277.98 : x
  2. Step 2: Convert to fraction form
    1,355,247.45/1,870,300.13 = 811,277.98/x
  3. Step 3: Cross multiply
    1,355,247.45x = 1,870,300.13 × 811,277.98
  4. Step 4: Simplify right side
    1,355,247.45x = 1,517,333,302,728.00
  5. Step 5: Solve for x
    x = 1,517,333,302,728.00/1,355,247.45
  6. Step 6: Final answer
    x = 1,119,598.71

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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.