Home / 885,920,005.30-1,328,880,007.95-425,747,211.70

Finding the Fourth Proportional to 885,920,005.30, 1,328,880,007.95 and 425,747,211.70

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Solution

The fourth proportional to 885,920,005.30, 1,328,880,007.95 and 425,747,211.70 is: 638,620,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,920,005.30 : 1,328,880,007.95 = 425,747,211.70 : x
  2. Step 2: Convert to fraction form
    885,920,005.30/1,328,880,007.95 = 425,747,211.70/x
  3. Step 3: Cross multiply
    885,920,005.30x = 1,328,880,007.95 × 425,747,211.70
  4. Step 4: Simplify right side
    885,920,005.30x = 565,766,958,068,586,368
  5. Step 5: Solve for x
    x = 565,766,958,068,586,368/885,920,005.30
  6. Step 6: Final answer
    x = 638,620,817.55

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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.