Finding the Fourth Proportional to 747,357,423.70, 1,121,036,135.55 and 402,983,655.70
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Solution
The fourth proportional to 747,357,423.70, 1,121,036,135.55 and 402,983,655.70 is: 604,475,483.55
Step by Step Solution
- Step 1: Write the proportion equation
747,357,423.70 : 1,121,036,135.55 = 402,983,655.70 : x - Step 2: Convert to fraction form
747,357,423.70/1,121,036,135.55 = 402,983,655.70/x - Step 3: Cross multiply
747,357,423.70x = 1,121,036,135.55 × 402,983,655.70 - Step 4: Simplify right side
747,357,423.70x = 451,759,240,075,739,712 - Step 5: Solve for x
x = 451,759,240,075,739,712/747,357,423.70 - Step 6: Final answer
x = 604,475,483.55
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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.