Finding the Fourth Proportional to 809,874,507.52, 1,117,620,860.16 and 438,587,925.76
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Solution
The fourth proportional to 809,874,507.52, 1,117,620,860.16 and 438,587,925.76 is: 605,248,109.79
Step by Step Solution
- Step 1: Write the proportion equation
809,874,507.52 : 1,117,620,860.16 = 438,587,925.76 : x - Step 2: Convert to fraction form
809,874,507.52/1,117,620,860.16 = 438,587,925.76/x - Step 3: Cross multiply
809,874,507.52x = 1,117,620,860.16 × 438,587,925.76 - Step 4: Simplify right side
809,874,507.52x = 490,175,014,843,681,472 - Step 5: Solve for x
x = 490,175,014,843,681,472/809,874,507.52 - Step 6: Final answer
x = 605,248,109.79
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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.