Home / 384,779,703.69-530,981,765.45-208,563,915.66

Finding the Fourth Proportional to 384,779,703.69, 530,981,765.45 and 208,563,915.66

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Solution

The fourth proportional to 384,779,703.69, 530,981,765.45 and 208,563,915.66 is: 287,810,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,779,703.69 : 530,981,765.45 = 208,563,915.66 : x
  2. Step 2: Convert to fraction form
    384,779,703.69/530,981,765.45 = 208,563,915.66/x
  3. Step 3: Cross multiply
    384,779,703.69x = 530,981,765.45 × 208,563,915.66
  4. Step 4: Simplify right side
    384,779,703.69x = 110,743,636,145,268,880
  5. Step 5: Solve for x
    x = 110,743,636,145,268,880/384,779,703.69
  6. Step 6: Final answer
    x = 287,810,492.82

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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.