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Finding the Fourth Proportional to 1,008,613,509.10, 1,512,920,263.65 and 804,540,165.10

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Solution

The fourth proportional to 1,008,613,509.10, 1,512,920,263.65 and 804,540,165.10 is: 1,206,810,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,613,509.10 : 1,512,920,263.65 = 804,540,165.10 : x
  2. Step 2: Convert to fraction form
    1,008,613,509.10/1,512,920,263.65 = 804,540,165.10/x
  3. Step 3: Cross multiply
    1,008,613,509.10x = 1,512,920,263.65 × 804,540,165.10
  4. Step 4: Simplify right side
    1,008,613,509.10x = 1,217,205,118,700,106,752
  5. Step 5: Solve for x
    x = 1,217,205,118,700,106,752/1,008,613,509.10
  6. Step 6: Final answer
    x = 1,206,810,247.65

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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.