Finding the Fourth Proportional to 1,317,928,342.10, 1,818,768,897.30 and 723,207,624.38
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Solution
The fourth proportional to 1,317,928,342.10, 1,818,768,897.30 and 723,207,624.38 is: 998,041,768.66
Step by Step Solution
- Step 1: Write the proportion equation
1,317,928,342.10 : 1,818,768,897.30 = 723,207,624.38 : x - Step 2: Convert to fraction form
1,317,928,342.10/1,818,768,897.30 = 723,207,624.38/x - Step 3: Cross multiply
1,317,928,342.10x = 1,818,768,897.30 × 723,207,624.38 - Step 4: Simplify right side
1,317,928,342.10x = 1,315,347,533,512,565,248 - Step 5: Solve for x
x = 1,315,347,533,512,565,248/1,317,928,342.10 - Step 6: Final answer
x = 998,041,768.66
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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.