Finding the Fourth Proportional to 542,714,400.05, 748,742,982.32 and 319,559,699.75
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Solution
The fourth proportional to 542,714,400.05, 748,742,982.32 and 319,559,699.75 is: 440,872,920.63
Step by Step Solution
- Step 1: Write the proportion equation
542,714,400.05 : 748,742,982.32 = 319,559,699.75 : x - Step 2: Convert to fraction form
542,714,400.05/748,742,982.32 = 319,559,699.75/x - Step 3: Cross multiply
542,714,400.05x = 748,742,982.32 × 319,559,699.75 - Step 4: Simplify right side
542,714,400.05x = 239,268,082,617,153,952 - Step 5: Solve for x
x = 239,268,082,617,153,952/542,714,400.05 - Step 6: Final answer
x = 440,872,920.63
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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.