Finding the Fourth Proportional to 640,413,751.68, 883,771,733.28 and 347,058,319.68
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Solution
The fourth proportional to 640,413,751.68, 883,771,733.28 and 347,058,319.68 is: 478,940,890.84
Step by Step Solution
- Step 1: Write the proportion equation
640,413,751.68 : 883,771,733.28 = 347,058,319.68 : x - Step 2: Convert to fraction form
640,413,751.68/883,771,733.28 = 347,058,319.68/x - Step 3: Cross multiply
640,413,751.68x = 883,771,733.28 × 347,058,319.68 - Step 4: Simplify right side
640,413,751.68x = 306,720,332,732,837,952 - Step 5: Solve for x
x = 306,720,332,732,837,952/640,413,751.68 - Step 6: Final answer
x = 478,940,890.84
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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.