Finding the Fourth Proportional to 578,058.68, 865,965.88 and 425,979.70
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Solution
The fourth proportional to 578,058.68, 865,965.88 and 425,979.70 is: 638,142.63
Step by Step Solution
- Step 1: Write the proportion equation
578,058.68 : 865,965.88 = 425,979.70 : x - Step 2: Convert to fraction form
578,058.68/865,965.88 = 425,979.70/x - Step 3: Cross multiply
578,058.68x = 865,965.88 × 425,979.70 - Step 4: Simplify right side
578,058.68x = 368,883,885,772.64 - Step 5: Solve for x
x = 368,883,885,772.64/578,058.68 - Step 6: Final answer
x = 638,142.63
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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.