Finding the Fourth Proportional to 1,315,898,555.01, 1,973,832,609.16 and 319,925,235.70
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Solution
The fourth proportional to 1,315,898,555.01, 1,973,832,609.16 and 319,925,235.70 is: 479,884,152.40
Step by Step Solution
- Step 1: Write the proportion equation
1,315,898,555.01 : 1,973,832,609.16 = 319,925,235.70 : x - Step 2: Convert to fraction form
1,315,898,555.01/1,973,832,609.16 = 319,925,235.70/x - Step 3: Cross multiply
1,315,898,555.01x = 1,973,832,609.16 × 319,925,235.70 - Step 4: Simplify right side
1,315,898,555.01x = 631,478,862,717,858,944 - Step 5: Solve for x
x = 631,478,862,717,858,944/1,315,898,555.01 - Step 6: Final answer
x = 479,884,152.40
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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.