Finding the Fourth Proportional to 869,553,613.20, 1,303,883,615.70 and 256,058,122.80
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Solution
The fourth proportional to 869,553,613.20, 1,303,883,615.70 and 256,058,122.80 is: 383,955,613.45
Step by Step Solution
- Step 1: Write the proportion equation
869,553,613.20 : 1,303,883,615.70 = 256,058,122.80 : x - Step 2: Convert to fraction form
869,553,613.20/1,303,883,615.70 = 256,058,122.80/x - Step 3: Cross multiply
869,553,613.20x = 1,303,883,615.70 × 256,058,122.80 - Step 4: Simplify right side
869,553,613.20x = 333,869,990,985,818,624 - Step 5: Solve for x
x = 333,869,990,985,818,624/869,553,613.20 - Step 6: Final answer
x = 383,955,613.45
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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.