Finding the Fourth Proportional to 783,435,647.70, 1,175,153,471.55 and 553,853,135.70
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Solution
The fourth proportional to 783,435,647.70, 1,175,153,471.55 and 553,853,135.70 is: 830,779,703.55
Step by Step Solution
- Step 1: Write the proportion equation
783,435,647.70 : 1,175,153,471.55 = 553,853,135.70 : x - Step 2: Convert to fraction form
783,435,647.70/1,175,153,471.55 = 553,853,135.70/x - Step 3: Cross multiply
783,435,647.70x = 1,175,153,471.55 × 553,853,135.70 - Step 4: Simplify right side
783,435,647.70x = 650,862,435,146,708,224 - Step 5: Solve for x
x = 650,862,435,146,708,224/783,435,647.70 - Step 6: Final answer
x = 830,779,703.55
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Double scale
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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.