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Finding the Fourth Proportional to 712,754,397.76, 983,603,187.54 and 395,237,012.33

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Solution

The fourth proportional to 712,754,397.76, 983,603,187.54 and 395,237,012.33 is: 545,428,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,754,397.76 : 983,603,187.54 = 395,237,012.33 : x
  2. Step 2: Convert to fraction form
    712,754,397.76/983,603,187.54 = 395,237,012.33/x
  3. Step 3: Cross multiply
    712,754,397.76x = 983,603,187.54 × 395,237,012.33
  4. Step 4: Simplify right side
    712,754,397.76x = 388,756,385,162,057,088
  5. Step 5: Solve for x
    x = 388,756,385,162,057,088/712,754,397.76
  6. Step 6: Final answer
    x = 545,428,251.84

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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.