Home / 1,317,247,813.20-1,975,871,719.80-347,899,429.20

Finding the Fourth Proportional to 1,317,247,813.20, 1,975,871,719.80 and 347,899,429.20

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Solution

The fourth proportional to 1,317,247,813.20, 1,975,871,719.80 and 347,899,429.20 is: 521,849,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,247,813.20 : 1,975,871,719.80 = 347,899,429.20 : x
  2. Step 2: Convert to fraction form
    1,317,247,813.20/1,975,871,719.80 = 347,899,429.20/x
  3. Step 3: Cross multiply
    1,317,247,813.20x = 1,975,871,719.80 × 347,899,429.20
  4. Step 4: Simplify right side
    1,317,247,813.20x = 687,404,643,490,842,240
  5. Step 5: Solve for x
    x = 687,404,643,490,842,240/1,317,247,813.20
  6. Step 6: Final answer
    x = 521,849,143.80

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Double scale
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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.