Home / 1,242,622.32-1,861,133.16-870,307.44

Finding the Fourth Proportional to 1,242,622.32, 1,861,133.16 and 870,307.44

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Solution

The fourth proportional to 1,242,622.32, 1,861,133.16 and 870,307.44 is: 1,303,499.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,622.32 : 1,861,133.16 = 870,307.44 : x
  2. Step 2: Convert to fraction form
    1,242,622.32/1,861,133.16 = 870,307.44/x
  3. Step 3: Cross multiply
    1,242,622.32x = 1,861,133.16 × 870,307.44
  4. Step 4: Simplify right side
    1,242,622.32x = 1,619,758,035,978.71
  5. Step 5: Solve for x
    x = 1,619,758,035,978.71/1,242,622.32
  6. Step 6: Final answer
    x = 1,303,499.87

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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.