Home / 406,944,499.80-610,416,749.70-391,072,128.60

Finding the Fourth Proportional to 406,944,499.80, 610,416,749.70 and 391,072,128.60

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Solution

The fourth proportional to 406,944,499.80, 610,416,749.70 and 391,072,128.60 is: 586,608,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,944,499.80 : 610,416,749.70 = 391,072,128.60 : x
  2. Step 2: Convert to fraction form
    406,944,499.80/610,416,749.70 = 391,072,128.60/x
  3. Step 3: Cross multiply
    406,944,499.80x = 610,416,749.70 × 391,072,128.60
  4. Step 4: Simplify right side
    406,944,499.80x = 238,716,977,638,272,448
  5. Step 5: Solve for x
    x = 238,716,977,638,272,448/406,944,499.80
  6. Step 6: Final answer
    x = 586,608,192.90

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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.