Finding the Fourth Proportional to 993,460,878.80, 1,490,191,318.20 and 977,336,565.20
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Solution
The fourth proportional to 993,460,878.80, 1,490,191,318.20 and 977,336,565.20 is: 1,466,004,847.80
Step by Step Solution
- Step 1: Write the proportion equation
993,460,878.80 : 1,490,191,318.20 = 977,336,565.20 : x - Step 2: Convert to fraction form
993,460,878.80/1,490,191,318.20 = 977,336,565.20/x - Step 3: Cross multiply
993,460,878.80x = 1,490,191,318.20 × 977,336,565.20 - Step 4: Simplify right side
993,460,878.80x = 1,456,418,464,420,448,256 - Step 5: Solve for x
x = 1,456,418,464,420,448,256/993,460,878.80 - Step 6: Final answer
x = 1,466,004,847.80
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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.