Finding the Fourth Proportional to 909,853,009.20, 1,364,779,513.80 and 450,687,985.20
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Solution
The fourth proportional to 909,853,009.20, 1,364,779,513.80 and 450,687,985.20 is: 676,031,977.80
Step by Step Solution
- Step 1: Write the proportion equation
909,853,009.20 : 1,364,779,513.80 = 450,687,985.20 : x - Step 2: Convert to fraction form
909,853,009.20/1,364,779,513.80 = 450,687,985.20/x - Step 3: Cross multiply
909,853,009.20x = 1,364,779,513.80 × 450,687,985.20 - Step 4: Simplify right side
909,853,009.20x = 615,089,729,316,757,504 - Step 5: Solve for x
x = 615,089,729,316,757,504/909,853,009.20 - Step 6: Final answer
x = 676,031,977.80
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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.