Finding the Fourth Proportional to 790,928,590.74, 1,185,562,397.79 and 266,115,504.12
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Solution
The fourth proportional to 790,928,590.74, 1,185,562,397.79 and 266,115,504.12 is: 398,893,830.43
Step by Step Solution
- Step 1: Write the proportion equation
790,928,590.74 : 1,185,562,397.79 = 266,115,504.12 : x - Step 2: Convert to fraction form
790,928,590.74/1,185,562,397.79 = 266,115,504.12/x - Step 3: Cross multiply
790,928,590.74x = 1,185,562,397.79 × 266,115,504.12 - Step 4: Simplify right side
790,928,590.74x = 315,496,535,153,601,792 - Step 5: Solve for x
x = 315,496,535,153,601,792/790,928,590.74 - Step 6: Final answer
x = 398,893,830.43
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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.