Finding the Fourth Proportional to 1,130,930,424.80, 1,696,395,637.20 and 915,939,576.80
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Solution
The fourth proportional to 1,130,930,424.80, 1,696,395,637.20 and 915,939,576.80 is: 1,373,909,365.20
Step by Step Solution
- Step 1: Write the proportion equation
1,130,930,424.80 : 1,696,395,637.20 = 915,939,576.80 : x - Step 2: Convert to fraction form
1,130,930,424.80/1,696,395,637.20 = 915,939,576.80/x - Step 3: Cross multiply
1,130,930,424.80x = 1,696,395,637.20 × 915,939,576.80 - Step 4: Simplify right side
1,130,930,424.80x = 1,553,795,902,022,334,208 - Step 5: Solve for x
x = 1,553,795,902,022,334,208/1,130,930,424.80 - Step 6: Final answer
x = 1,373,909,365.20
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1.5x scale
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.