Home / 807,104,814.40-1,210,657,221.60-438,816,201.40

Finding the Fourth Proportional to 807,104,814.40, 1,210,657,221.60 and 438,816,201.40

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Solution

The fourth proportional to 807,104,814.40, 1,210,657,221.60 and 438,816,201.40 is: 658,224,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,104,814.40 : 1,210,657,221.60 = 438,816,201.40 : x
  2. Step 2: Convert to fraction form
    807,104,814.40/1,210,657,221.60 = 438,816,201.40/x
  3. Step 3: Cross multiply
    807,104,814.40x = 1,210,657,221.60 × 438,816,201.40
  4. Step 4: Simplify right side
    807,104,814.40x = 531,256,003,179,989,952
  5. Step 5: Solve for x
    x = 531,256,003,179,989,952/807,104,814.40
  6. Step 6: Final answer
    x = 658,224,302.10

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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.