Finding the Fourth Proportional to 831,708,547.48, 1,147,712,324.50 and 455,292,317.06
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Solution
The fourth proportional to 831,708,547.48, 1,147,712,324.50 and 455,292,317.06 is: 628,278,505.88
Step by Step Solution
- Step 1: Write the proportion equation
831,708,547.48 : 1,147,712,324.50 = 455,292,317.06 : x - Step 2: Convert to fraction form
831,708,547.48/1,147,712,324.50 = 455,292,317.06/x - Step 3: Cross multiply
831,708,547.48x = 1,147,712,324.50 × 455,292,317.06 - Step 4: Simplify right side
831,708,547.48x = 522,544,603,539,923,584 - Step 5: Solve for x
x = 522,544,603,539,923,584/831,708,547.48 - Step 6: Final answer
x = 628,278,505.88
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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.