Finding the Fourth Proportional to 1,395,293,920,496.20, 1,925,863,869,494.80 and 908,765,243,869.92
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Solution
The fourth proportional to 1,395,293,920,496.20, 1,925,863,869,494.80 and 908,765,243,869.92 is: 1,254,329,373,412.10
Step by Step Solution
- Step 1: Write the proportion equation
1,395,293,920,496.20 : 1,925,863,869,494.80 = 908,765,243,869.92 : x - Step 2: Convert to fraction form
1,395,293,920,496.20/1,925,863,869,494.80 = 908,765,243,869.92/x - Step 3: Cross multiply
1,395,293,920,496.20x = 1,925,863,869,494.80 × 908,765,243,869.92 - Step 4: Simplify right side
1,395,293,920,496.20x = 1,750,158,149,021,709,969,129,472 - Step 5: Solve for x
x = 1,750,158,149,021,709,969,129,472/1,395,293,920,496.20 - Step 6: Final answer
x = 1,254,329,373,412.10
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.