Finding the Fourth Proportional to 665,759,982.87, 917,996,929.70 and 497,958,482.21
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Solution
The fourth proportional to 665,759,982.87, 917,996,929.70 and 497,958,482.21 is: 686,620,358.00
Step by Step Solution
- Step 1: Write the proportion equation
665,759,982.87 : 917,996,929.70 = 497,958,482.21 : x - Step 2: Convert to fraction form
665,759,982.87/917,996,929.70 = 497,958,482.21/x - Step 3: Cross multiply
665,759,982.87x = 917,996,929.70 × 497,958,482.21 - Step 4: Simplify right side
665,759,982.87x = 457,124,357,779,772,288 - Step 5: Solve for x
x = 457,124,357,779,772,288/665,759,982.87 - Step 6: Final answer
x = 686,620,358.00
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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.