Finding the Fourth Proportional to 383,471,129.70, 575,206,694.55 and 319,698,209.70
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Solution
The fourth proportional to 383,471,129.70, 575,206,694.55 and 319,698,209.70 is: 479,547,314.55
Step by Step Solution
- Step 1: Write the proportion equation
383,471,129.70 : 575,206,694.55 = 319,698,209.70 : x - Step 2: Convert to fraction form
383,471,129.70/575,206,694.55 = 319,698,209.70/x - Step 3: Cross multiply
383,471,129.70x = 575,206,694.55 × 319,698,209.70 - Step 4: Simplify right side
383,471,129.70x = 183,892,550,455,089,728 - Step 5: Solve for x
x = 183,892,550,455,089,728/383,471,129.70 - Step 6: Final answer
x = 479,547,314.55
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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.