Home / 406,943,998.80-610,415,998.20-391,071,627.60

Finding the Fourth Proportional to 406,943,998.80, 610,415,998.20 and 391,071,627.60

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Solution

The fourth proportional to 406,943,998.80, 610,415,998.20 and 391,071,627.60 is: 586,607,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,943,998.80 : 610,415,998.20 = 391,071,627.60 : x
  2. Step 2: Convert to fraction form
    406,943,998.80/610,415,998.20 = 391,071,627.60/x
  3. Step 3: Cross multiply
    406,943,998.80x = 610,415,998.20 × 391,071,627.60
  4. Step 4: Simplify right side
    406,943,998.80x = 238,716,377,929,152,704
  5. Step 5: Solve for x
    x = 238,716,377,929,152,704/406,943,998.80
  6. Step 6: Final answer
    x = 586,607,441.40

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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.