Finding the Fourth Proportional to 689,495,529.80, 1,034,243,294.70 and 603,402,087.80
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Solution
The fourth proportional to 689,495,529.80, 1,034,243,294.70 and 603,402,087.80 is: 905,103,131.70
Step by Step Solution
- Step 1: Write the proportion equation
689,495,529.80 : 1,034,243,294.70 = 603,402,087.80 : x - Step 2: Convert to fraction form
689,495,529.80/1,034,243,294.70 = 603,402,087.80/x - Step 3: Cross multiply
689,495,529.80x = 1,034,243,294.70 × 603,402,087.80 - Step 4: Simplify right side
689,495,529.80x = 624,064,563,315,130,624 - Step 5: Solve for x
x = 624,064,563,315,130,624/689,495,529.80 - Step 6: Final answer
x = 905,103,131.70
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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.