Finding the Fourth Proportional to 1,018,512,386.39, 1,527,768,697.95 and 319,059,028.05
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Solution
The fourth proportional to 1,018,512,386.39, 1,527,768,697.95 and 319,059,028.05 is: 478,588,579.15
Step by Step Solution
- Step 1: Write the proportion equation
1,018,512,386.39 : 1,527,768,697.95 = 319,059,028.05 : x - Step 2: Convert to fraction form
1,018,512,386.39/1,527,768,697.95 = 319,059,028.05/x - Step 3: Cross multiply
1,018,512,386.39x = 1,527,768,697.95 × 319,059,028.05 - Step 4: Simplify right side
1,018,512,386.39x = 487,448,395,847,411,904 - Step 5: Solve for x
x = 487,448,395,847,411,904/1,018,512,386.39 - Step 6: Final answer
x = 478,588,579.15
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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.