Finding the Fourth Proportional to 623,975,474.60, 935,963,211.90 and 442,576,946.60
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Solution
The fourth proportional to 623,975,474.60, 935,963,211.90 and 442,576,946.60 is: 663,865,419.90
Step by Step Solution
- Step 1: Write the proportion equation
623,975,474.60 : 935,963,211.90 = 442,576,946.60 : x - Step 2: Convert to fraction form
623,975,474.60/935,963,211.90 = 442,576,946.60/x - Step 3: Cross multiply
623,975,474.60x = 935,963,211.90 × 442,576,946.60 - Step 4: Simplify right side
623,975,474.60x = 414,235,740,452,630,784 - Step 5: Solve for x
x = 414,235,740,452,630,784/623,975,474.60 - Step 6: Final answer
x = 663,865,419.90
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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.