Finding the Fourth Proportional to 1,408,537,075.94, 1,943,705,281.11 and 781,965,147.59
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Solution
The fourth proportional to 1,408,537,075.94, 1,943,705,281.11 and 781,965,147.59 is: 1,079,069,775.99
Step by Step Solution
- Step 1: Write the proportion equation
1,408,537,075.94 : 1,943,705,281.11 = 781,965,147.59 : x - Step 2: Convert to fraction form
1,408,537,075.94/1,943,705,281.11 = 781,965,147.59/x - Step 3: Cross multiply
1,408,537,075.94x = 1,943,705,281.11 × 781,965,147.59 - Step 4: Simplify right side
1,408,537,075.94x = 1,519,909,787,009,762,816 - Step 5: Solve for x
x = 1,519,909,787,009,762,816/1,408,537,075.94 - Step 6: Final answer
x = 1,079,069,775.99
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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.