Home / 990,140.30-1,488,381.60-919,937.60

Finding the Fourth Proportional to 990,140.30, 1,488,381.60 and 919,937.60

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Solution

The fourth proportional to 990,140.30, 1,488,381.60 and 919,937.60 is: 1,382,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,140.30 : 1,488,381.60 = 919,937.60 : x
  2. Step 2: Convert to fraction form
    990,140.30/1,488,381.60 = 919,937.60/x
  3. Step 3: Cross multiply
    990,140.30x = 1,488,381.60 × 919,937.60
  4. Step 4: Simplify right side
    990,140.30x = 1,369,218,196,988.16
  5. Step 5: Solve for x
    x = 1,369,218,196,988.16/990,140.30
  6. Step 6: Final answer
    x = 1,382,852.71

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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.