Home / 1,238,868,434.38-1,709,673,681.06-674,389,718.79

Finding the Fourth Proportional to 1,238,868,434.38, 1,709,673,681.06 and 674,389,718.79

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Solution

The fourth proportional to 1,238,868,434.38, 1,709,673,681.06 and 674,389,718.79 is: 930,676,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,868,434.38 : 1,709,673,681.06 = 674,389,718.79 : x
  2. Step 2: Convert to fraction form
    1,238,868,434.38/1,709,673,681.06 = 674,389,718.79/x
  3. Step 3: Cross multiply
    1,238,868,434.38x = 1,709,673,681.06 × 674,389,718.79
  4. Step 4: Simplify right side
    1,238,868,434.38x = 1,152,986,352,992,717,568
  5. Step 5: Solve for x
    x = 1,152,986,352,992,717,568/1,238,868,434.38
  6. Step 6: Final answer
    x = 930,676,996.04

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Double scale
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1.5x scale

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.