Finding the Fourth Proportional to 647,423,139.90, 971,134,709.85 and 572,596,247.10
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Solution
The fourth proportional to 647,423,139.90, 971,134,709.85 and 572,596,247.10 is: 858,894,370.65
Step by Step Solution
- Step 1: Write the proportion equation
647,423,139.90 : 971,134,709.85 = 572,596,247.10 : x - Step 2: Convert to fraction form
647,423,139.90/971,134,709.85 = 572,596,247.10/x - Step 3: Cross multiply
647,423,139.90x = 971,134,709.85 × 572,596,247.10 - Step 4: Simplify right side
647,423,139.90x = 556,068,090,288,657,472 - Step 5: Solve for x
x = 556,068,090,288,657,472/647,423,139.90 - Step 6: Final answer
x = 858,894,370.65
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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.