Finding the Fourth Proportional to 1,248,521,670.80, 1,722,959,306.44 and 746,730,445.84
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Solution
The fourth proportional to 1,248,521,670.80, 1,722,959,306.44 and 746,730,445.84 is: 1,030,487,656.84
Step by Step Solution
- Step 1: Write the proportion equation
1,248,521,670.80 : 1,722,959,306.44 = 746,730,445.84 : x - Step 2: Convert to fraction form
1,248,521,670.80/1,722,959,306.44 = 746,730,445.84/x - Step 3: Cross multiply
1,248,521,670.80x = 1,722,959,306.44 × 746,730,445.84 - Step 4: Simplify right side
1,248,521,670.80x = 1,286,586,171,062,118,400 - Step 5: Solve for x
x = 1,286,586,171,062,118,400/1,248,521,670.80 - Step 6: Final answer
x = 1,030,487,656.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.