Home / 1,122,623.67-1,549,222.14-639,189.05

Finding the Fourth Proportional to 1,122,623.67, 1,549,222.14 and 639,189.05

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Solution

The fourth proportional to 1,122,623.67, 1,549,222.14 and 639,189.05 is: 882,081.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,623.67 : 1,549,222.14 = 639,189.05 : x
  2. Step 2: Convert to fraction form
    1,122,623.67/1,549,222.14 = 639,189.05/x
  3. Step 3: Cross multiply
    1,122,623.67x = 1,549,222.14 × 639,189.05
  4. Step 4: Simplify right side
    1,122,623.67x = 990,245,820,159.46
  5. Step 5: Solve for x
    x = 990,245,820,159.46/1,122,623.67
  6. Step 6: Final answer
    x = 882,081.72

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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.