Home / 1,031,739,139.28-1,423,762,609.46-630,524,121.12

Finding the Fourth Proportional to 1,031,739,139.28, 1,423,762,609.46 and 630,524,121.12

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Solution

The fourth proportional to 1,031,739,139.28, 1,423,762,609.46 and 630,524,121.12 is: 870,100,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031,739,139.28 : 1,423,762,609.46 = 630,524,121.12 : x
  2. Step 2: Convert to fraction form
    1,031,739,139.28/1,423,762,609.46 = 630,524,121.12/x
  3. Step 3: Cross multiply
    1,031,739,139.28x = 1,423,762,609.46 × 630,524,121.12
  4. Step 4: Simplify right side
    1,031,739,139.28x = 897,716,668,010,131,584
  5. Step 5: Solve for x
    x = 897,716,668,010,131,584/1,031,739,139.28
  6. Step 6: Final answer
    x = 870,100,429.30

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Double scale
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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.