Finding the Fourth Proportional to 1,026,438,258.80, 1,539,657,388.20 and 617,283,801.20
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Solution
The fourth proportional to 1,026,438,258.80, 1,539,657,388.20 and 617,283,801.20 is: 925,925,701.80
Step by Step Solution
- Step 1: Write the proportion equation
1,026,438,258.80 : 1,539,657,388.20 = 617,283,801.20 : x - Step 2: Convert to fraction form
1,026,438,258.80/1,539,657,388.20 = 617,283,801.20/x - Step 3: Cross multiply
1,026,438,258.80x = 1,539,657,388.20 × 617,283,801.20 - Step 4: Simplify right side
1,026,438,258.80x = 950,405,565,133,760,128 - Step 5: Solve for x
x = 950,405,565,133,760,128/1,026,438,258.80 - Step 6: Final answer
x = 925,925,701.80
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Double scale
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Similar ratio
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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.