Home / 485,112,010.80-727,668,016.20-447,698,564.40

Finding the Fourth Proportional to 485,112,010.80, 727,668,016.20 and 447,698,564.40

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Solution

The fourth proportional to 485,112,010.80, 727,668,016.20 and 447,698,564.40 is: 671,547,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,112,010.80 : 727,668,016.20 = 447,698,564.40 : x
  2. Step 2: Convert to fraction form
    485,112,010.80/727,668,016.20 = 447,698,564.40/x
  3. Step 3: Cross multiply
    485,112,010.80x = 727,668,016.20 × 447,698,564.40
  4. Step 4: Simplify right side
    485,112,010.80x = 325,775,926,212,535,936
  5. Step 5: Solve for x
    x = 325,775,926,212,535,936/485,112,010.80
  6. Step 6: Final answer
    x = 671,547,846.60

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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.