Finding the Fourth Proportional to 885,680,070.80, 1,328,520,106.20 and 425,507,277.20
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Solution
The fourth proportional to 885,680,070.80, 1,328,520,106.20 and 425,507,277.20 is: 638,260,915.80
Step by Step Solution
- Step 1: Write the proportion equation
885,680,070.80 : 1,328,520,106.20 = 425,507,277.20 : x - Step 2: Convert to fraction form
885,680,070.80/1,328,520,106.20 = 425,507,277.20/x - Step 3: Cross multiply
885,680,070.80x = 1,328,520,106.20 × 425,507,277.20 - Step 4: Simplify right side
885,680,070.80x = 565,294,973,094,616,832 - Step 5: Solve for x
x = 565,294,973,094,616,832/885,680,070.80 - Step 6: Final answer
x = 638,260,915.80
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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.