Finding the Fourth Proportional to 856,106,408.73, 1,181,432,890.68 and 464,965,832.73
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Solution
The fourth proportional to 856,106,408.73, 1,181,432,890.68 and 464,965,832.73 is: 641,656,133.20
Step by Step Solution
- Step 1: Write the proportion equation
856,106,408.73 : 1,181,432,890.68 = 464,965,832.73 : x - Step 2: Convert to fraction form
856,106,408.73/1,181,432,890.68 = 464,965,832.73/x - Step 3: Cross multiply
856,106,408.73x = 1,181,432,890.68 × 464,965,832.73 - Step 4: Simplify right side
856,106,408.73x = 549,325,927,829,637,312 - Step 5: Solve for x
x = 549,325,927,829,637,312/856,106,408.73 - Step 6: Final answer
x = 641,656,133.20
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Double scale
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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.