Home / 1,319,304,656.31-1,979,200,271.81-434,039,839.44

Finding the Fourth Proportional to 1,319,304,656.31, 1,979,200,271.81 and 434,039,839.44

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Solution

The fourth proportional to 1,319,304,656.31, 1,979,200,271.81 and 434,039,839.44 is: 651,139,798.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,304,656.31 : 1,979,200,271.81 = 434,039,839.44 : x
  2. Step 2: Convert to fraction form
    1,319,304,656.31/1,979,200,271.81 = 434,039,839.44/x
  3. Step 3: Cross multiply
    1,319,304,656.31x = 1,979,200,271.81 × 434,039,839.44
  4. Step 4: Simplify right side
    1,319,304,656.31x = 859,051,768,187,205,760
  5. Step 5: Solve for x
    x = 859,051,768,187,205,760/1,319,304,656.31
  6. Step 6: Final answer
    x = 651,139,798.59

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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.