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Finding the Fourth Proportional to 919,329,000.40, 1,378,993,500.60 and 804,537,744.40

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Solution

The fourth proportional to 919,329,000.40, 1,378,993,500.60 and 804,537,744.40 is: 1,206,806,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,329,000.40 : 1,378,993,500.60 = 804,537,744.40 : x
  2. Step 2: Convert to fraction form
    919,329,000.40/1,378,993,500.60 = 804,537,744.40/x
  3. Step 3: Cross multiply
    919,329,000.40x = 1,378,993,500.60 × 804,537,744.40
  4. Step 4: Simplify right side
    919,329,000.40x = 1,109,452,320,514,983,936
  5. Step 5: Solve for x
    x = 1,109,452,320,514,983,936/919,329,000.40
  6. Step 6: Final answer
    x = 1,206,806,616.60

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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.