Finding the Fourth Proportional to 647,354,117.40, 971,031,176.10 and 402,466,104.60
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Solution
The fourth proportional to 647,354,117.40, 971,031,176.10 and 402,466,104.60 is: 603,699,156.90
Step by Step Solution
- Step 1: Write the proportion equation
647,354,117.40 : 971,031,176.10 = 402,466,104.60 : x - Step 2: Convert to fraction form
647,354,117.40/971,031,176.10 = 402,466,104.60/x - Step 3: Cross multiply
647,354,117.40x = 971,031,176.10 × 402,466,104.60 - Step 4: Simplify right side
647,354,117.40x = 390,807,134,890,123,648 - Step 5: Solve for x
x = 390,807,134,890,123,648/647,354,117.40 - Step 6: Final answer
x = 603,699,156.90
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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.