Home / 406,945,152.80-610,417,729.20-391,072,781.60

Finding the Fourth Proportional to 406,945,152.80, 610,417,729.20 and 391,072,781.60

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Solution

The fourth proportional to 406,945,152.80, 610,417,729.20 and 391,072,781.60 is: 586,609,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,945,152.80 : 610,417,729.20 = 391,072,781.60 : x
  2. Step 2: Convert to fraction form
    406,945,152.80/610,417,729.20 = 391,072,781.60/x
  3. Step 3: Cross multiply
    406,945,152.80x = 610,417,729.20 × 391,072,781.60
  4. Step 4: Simplify right side
    406,945,152.80x = 238,717,759,296,199,584
  5. Step 5: Solve for x
    x = 238,717,759,296,199,584/406,945,152.80
  6. Step 6: Final answer
    x = 586,609,172.40

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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.