Finding the Fourth Proportional to 1,129,554,038.90, 1,694,331,058.35 and 402,280,310.90
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Solution
The fourth proportional to 1,129,554,038.90, 1,694,331,058.35 and 402,280,310.90 is: 603,420,466.35
Step by Step Solution
- Step 1: Write the proportion equation
1,129,554,038.90 : 1,694,331,058.35 = 402,280,310.90 : x - Step 2: Convert to fraction form
1,129,554,038.90/1,694,331,058.35 = 402,280,310.90/x - Step 3: Cross multiply
1,129,554,038.90x = 1,694,331,058.35 × 402,280,310.90 - Step 4: Simplify right side
1,129,554,038.90x = 681,596,024,920,563,968 - Step 5: Solve for x
x = 681,596,024,920,563,968/1,129,554,038.90 - Step 6: Final answer
x = 603,420,466.35
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Double scale
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Similar ratio
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1.5x scale
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.