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Finding the Fourth Proportional to 919,328,596.90, 1,378,992,895.35 and 804,537,340.90

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Solution

The fourth proportional to 919,328,596.90, 1,378,992,895.35 and 804,537,340.90 is: 1,206,806,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,328,596.90 : 1,378,992,895.35 = 804,537,340.90 : x
  2. Step 2: Convert to fraction form
    919,328,596.90/1,378,992,895.35 = 804,537,340.90/x
  3. Step 3: Cross multiply
    919,328,596.90x = 1,378,992,895.35 × 804,537,340.90
  4. Step 4: Simplify right side
    919,328,596.90x = 1,109,451,277,144,880,896
  5. Step 5: Solve for x
    x = 1,109,451,277,144,880,896/919,328,596.90
  6. Step 6: Final answer
    x = 1,206,806,011.35

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Double scale
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Similar ratio
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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.