Finding the Fourth Proportional to 869,124,485.70, 1,303,686,728.55 and 460,977,797.70
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Solution
The fourth proportional to 869,124,485.70, 1,303,686,728.55 and 460,977,797.70 is: 691,466,696.55
Step by Step Solution
- Step 1: Write the proportion equation
869,124,485.70 : 1,303,686,728.55 = 460,977,797.70 : x - Step 2: Convert to fraction form
869,124,485.70/1,303,686,728.55 = 460,977,797.70/x - Step 3: Cross multiply
869,124,485.70x = 1,303,686,728.55 × 460,977,797.70 - Step 4: Simplify right side
869,124,485.70x = 600,970,637,017,696,640 - Step 5: Solve for x
x = 600,970,637,017,696,640/869,124,485.70 - Step 6: Final answer
x = 691,466,696.55
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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.