Home / 812,051,931.20-1,120,602,664.82-459,620,354.45

Finding the Fourth Proportional to 812,051,931.20, 1,120,602,664.82 and 459,620,354.45

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Solution

The fourth proportional to 812,051,931.20, 1,120,602,664.82 and 459,620,354.45 is: 634,259,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,051,931.20 : 1,120,602,664.82 = 459,620,354.45 : x
  2. Step 2: Convert to fraction form
    812,051,931.20/1,120,602,664.82 = 459,620,354.45/x
  3. Step 3: Cross multiply
    812,051,931.20x = 1,120,602,664.82 × 459,620,354.45
  4. Step 4: Simplify right side
    812,051,931.20x = 515,051,793,994,281,856
  5. Step 5: Solve for x
    x = 515,051,793,994,281,856/812,051,931.20
  6. Step 6: Final answer
    x = 634,259,675.04

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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.