Finding the Fourth Proportional to 1,185,848,668.94, 1,636,471,130.72 and 657,292,064.99
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Solution
The fourth proportional to 1,185,848,668.94, 1,636,471,130.72 and 657,292,064.99 is: 907,063,031.71
Step by Step Solution
- Step 1: Write the proportion equation
1,185,848,668.94 : 1,636,471,130.72 = 657,292,064.99 : x - Step 2: Convert to fraction form
1,185,848,668.94/1,636,471,130.72 = 657,292,064.99/x - Step 3: Cross multiply
1,185,848,668.94x = 1,636,471,130.72 × 657,292,064.99 - Step 4: Simplify right side
1,185,848,668.94x = 1,075,639,488,796,000,128 - Step 5: Solve for x
x = 1,075,639,488,796,000,128/1,185,848,668.94 - Step 6: Final answer
x = 907,063,031.71
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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.