Finding the Fourth Proportional to 684,288,327.20, 1,026,432,490.80 and 670,683,437.60
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Solution
The fourth proportional to 684,288,327.20, 1,026,432,490.80 and 670,683,437.60 is: 1,006,025,156.40
Step by Step Solution
- Step 1: Write the proportion equation
684,288,327.20 : 1,026,432,490.80 = 670,683,437.60 : x - Step 2: Convert to fraction form
684,288,327.20/1,026,432,490.80 = 670,683,437.60/x - Step 3: Cross multiply
684,288,327.20x = 1,026,432,490.80 × 670,683,437.60 - Step 4: Simplify right side
684,288,327.20x = 688,411,271,394,074,368 - Step 5: Solve for x
x = 688,411,271,394,074,368/684,288,327.20 - Step 6: Final answer
x = 1,006,025,156.40
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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.