Finding the Fourth Proportional to 783,435,647.20, 1,175,153,470.80 and 553,853,135.20
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Solution
The fourth proportional to 783,435,647.20, 1,175,153,470.80 and 553,853,135.20 is: 830,779,702.80
Step by Step Solution
- Step 1: Write the proportion equation
783,435,647.20 : 1,175,153,470.80 = 553,853,135.20 : x - Step 2: Convert to fraction form
783,435,647.20/1,175,153,470.80 = 553,853,135.20/x - Step 3: Cross multiply
783,435,647.20x = 1,175,153,470.80 × 553,853,135.20 - Step 4: Simplify right side
783,435,647.20x = 650,862,434,143,741,696 - Step 5: Solve for x
x = 650,862,434,143,741,696/783,435,647.20 - Step 6: Final answer
x = 830,779,702.80
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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.