Home / 640,739,285,121.51-883,818,013,607.42-380,132,488,973.84

Finding the Fourth Proportional to 640,739,285,121.51, 883,818,013,607.42 and 380,132,488,973.84

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Solution

The fourth proportional to 640,739,285,121.51, 883,818,013,607.42 and 380,132,488,973.84 is: 524,344,220,986.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,739,285,121.51 : 883,818,013,607.42 = 380,132,488,973.84 : x
  2. Step 2: Convert to fraction form
    640,739,285,121.51/883,818,013,607.42 = 380,132,488,973.84/x
  3. Step 3: Cross multiply
    640,739,285,121.51x = 883,818,013,607.42 × 380,132,488,973.84
  4. Step 4: Simplify right side
    640,739,285,121.51x = 335,967,941,312,503,770,775,552
  5. Step 5: Solve for x
    x = 335,967,941,312,503,770,775,552/640,739,285,121.51
  6. Step 6: Final answer
    x = 524,344,220,986.53

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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.