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Finding the Fourth Proportional to 626,543.70, 864,649.60 and 368,373.81

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Solution

The fourth proportional to 626,543.70, 864,649.60 and 368,373.81 is: 508,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,543.70 : 864,649.60 = 368,373.81 : x
  2. Step 2: Convert to fraction form
    626,543.70/864,649.60 = 368,373.81/x
  3. Step 3: Cross multiply
    626,543.70x = 864,649.60 × 368,373.81
  4. Step 4: Simplify right side
    626,543.70x = 318,514,267,466.98
  5. Step 5: Solve for x
    x = 318,514,267,466.98/626,543.70
  6. Step 6: Final answer
    x = 508,367.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.