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Finding the Fourth Proportional to 639,521,999.80, 959,282,999.70 and 600,779,950.90

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Solution

The fourth proportional to 639,521,999.80, 959,282,999.70 and 600,779,950.90 is: 901,169,926.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,521,999.80 : 959,282,999.70 = 600,779,950.90 : x
  2. Step 2: Convert to fraction form
    639,521,999.80/959,282,999.70 = 600,779,950.90/x
  3. Step 3: Cross multiply
    639,521,999.80x = 959,282,999.70 × 600,779,950.90
  4. Step 4: Simplify right side
    639,521,999.80x = 576,317,993,458,970,752
  5. Step 5: Solve for x
    x = 576,317,993,458,970,752/639,521,999.80
  6. Step 6: Final answer
    x = 901,169,926.35

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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.