Finding the Fourth Proportional to 1,121,931,444.90, 1,682,897,167.35 and 1,098,973,193.70
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Solution
The fourth proportional to 1,121,931,444.90, 1,682,897,167.35 and 1,098,973,193.70 is: 1,648,459,790.55
Step by Step Solution
- Step 1: Write the proportion equation
1,121,931,444.90 : 1,682,897,167.35 = 1,098,973,193.70 : x - Step 2: Convert to fraction form
1,121,931,444.90/1,682,897,167.35 = 1,098,973,193.70/x - Step 3: Cross multiply
1,121,931,444.90x = 1,682,897,167.35 × 1,098,973,193.70 - Step 4: Simplify right side
1,121,931,444.90x = 1,849,458,874,671,312,896 - Step 5: Solve for x
x = 1,849,458,874,671,312,896/1,121,931,444.90 - Step 6: Final answer
x = 1,648,459,790.55
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Double scale
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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.