Home / 1,539,651,287.80-2,309,476,931.70-721,846,257.40

Finding the Fourth Proportional to 1,539,651,287.80, 2,309,476,931.70 and 721,846,257.40

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Solution

The fourth proportional to 1,539,651,287.80, 2,309,476,931.70 and 721,846,257.40 is: 1,082,769,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539,651,287.80 : 2,309,476,931.70 = 721,846,257.40 : x
  2. Step 2: Convert to fraction form
    1,539,651,287.80/2,309,476,931.70 = 721,846,257.40/x
  3. Step 3: Cross multiply
    1,539,651,287.80x = 2,309,476,931.70 × 721,846,257.40
  4. Step 4: Simplify right side
    1,539,651,287.80x = 1,667,087,279,699,280,128
  5. Step 5: Solve for x
    x = 1,667,087,279,699,280,128/1,539,651,287.80
  6. Step 6: Final answer
    x = 1,082,769,386.10

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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.