Finding the Fourth Proportional to 1,328,038,437.32, 1,992,488,661.74 and 395,369,352.53
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Solution
The fourth proportional to 1,328,038,437.32, 1,992,488,661.74 and 395,369,352.53 is: 593,182,343.20
Step by Step Solution
- Step 1: Write the proportion equation
1,328,038,437.32 : 1,992,488,661.74 = 395,369,352.53 : x - Step 2: Convert to fraction form
1,328,038,437.32/1,992,488,661.74 = 395,369,352.53/x - Step 3: Cross multiply
1,328,038,437.32x = 1,992,488,661.74 × 395,369,352.53 - Step 4: Simplify right side
1,328,038,437.32x = 787,768,952,114,007,808 - Step 5: Solve for x
x = 787,768,952,114,007,808/1,328,038,437.32 - Step 6: Final answer
x = 593,182,343.20
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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.