Finding the Fourth Proportional to 679,888,946.90, 1,019,833,420.35 and 623,201,906.90
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Solution
The fourth proportional to 679,888,946.90, 1,019,833,420.35 and 623,201,906.90 is: 934,802,860.35
Step by Step Solution
- Step 1: Write the proportion equation
679,888,946.90 : 1,019,833,420.35 = 623,201,906.90 : x - Step 2: Convert to fraction form
679,888,946.90/1,019,833,420.35 = 623,201,906.90/x - Step 3: Cross multiply
679,888,946.90x = 1,019,833,420.35 × 623,201,906.90 - Step 4: Simplify right side
679,888,946.90x = 635,562,132,282,469,248 - Step 5: Solve for x
x = 635,562,132,282,469,248/679,888,946.90 - Step 6: Final answer
x = 934,802,860.35
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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.