Finding the Fourth Proportional to 426,492,058.70, 639,738,088.05 and 357,617,305.10
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Solution
The fourth proportional to 426,492,058.70, 639,738,088.05 and 357,617,305.10 is: 536,425,957.65
Step by Step Solution
- Step 1: Write the proportion equation
426,492,058.70 : 639,738,088.05 = 357,617,305.10 : x - Step 2: Convert to fraction form
426,492,058.70/639,738,088.05 = 357,617,305.10/x - Step 3: Cross multiply
426,492,058.70x = 639,738,088.05 × 357,617,305.10 - Step 4: Simplify right side
426,492,058.70x = 228,781,411,018,267,520 - Step 5: Solve for x
x = 228,781,411,018,267,520/426,492,058.70 - Step 6: Final answer
x = 536,425,957.65
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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.