Home / 699,159,662,567.85-964,830,066,165.51-390,515,525,842.21

Finding the Fourth Proportional to 699,159,662,567.85, 964,830,066,165.51 and 390,515,525,842.21

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Solution

The fourth proportional to 699,159,662,567.85, 964,830,066,165.51 and 390,515,525,842.21 is: 538,905,690,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,662,567.85 : 964,830,066,165.51 = 390,515,525,842.21 : x
  2. Step 2: Convert to fraction form
    699,159,662,567.85/964,830,066,165.51 = 390,515,525,842.21/x
  3. Step 3: Cross multiply
    699,159,662,567.85x = 964,830,066,165.51 × 390,515,525,842.21
  4. Step 4: Simplify right side
    699,159,662,567.85x = 376,781,120,636,998,408,732,672
  5. Step 5: Solve for x
    x = 376,781,120,636,998,408,732,672/699,159,662,567.85
  6. Step 6: Final answer
    x = 538,905,690,372.88

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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.