Finding the Fourth Proportional to 1,234,961,130.60, 1,852,441,695.90 and 507,708,138.60
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Solution
The fourth proportional to 1,234,961,130.60, 1,852,441,695.90 and 507,708,138.60 is: 761,562,207.90
Step by Step Solution
- Step 1: Write the proportion equation
1,234,961,130.60 : 1,852,441,695.90 = 507,708,138.60 : x - Step 2: Convert to fraction form
1,234,961,130.60/1,852,441,695.90 = 507,708,138.60/x - Step 3: Cross multiply
1,234,961,130.60x = 1,852,441,695.90 × 507,708,138.60 - Step 4: Simplify right side
1,234,961,130.60x = 940,499,725,290,416,384 - Step 5: Solve for x
x = 940,499,725,290,416,384/1,234,961,130.60 - Step 6: Final answer
x = 761,562,207.90
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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.