Home / 406,945,802.80-610,418,704.20-391,073,431.60

Finding the Fourth Proportional to 406,945,802.80, 610,418,704.20 and 391,073,431.60

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Solution

The fourth proportional to 406,945,802.80, 610,418,704.20 and 391,073,431.60 is: 586,610,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,945,802.80 : 610,418,704.20 = 391,073,431.60 : x
  2. Step 2: Convert to fraction form
    406,945,802.80/610,418,704.20 = 391,073,431.60/x
  3. Step 3: Cross multiply
    406,945,802.80x = 610,418,704.20 × 391,073,431.60
  4. Step 4: Simplify right side
    406,945,802.80x = 238,718,537,364,319,360
  5. Step 5: Solve for x
    x = 238,718,537,364,319,360/406,945,802.80
  6. Step 6: Final answer
    x = 586,610,147.40

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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.