Home / 388,127,440.80-581,996,953.44-129,252,425.76

Finding the Fourth Proportional to 388,127,440.80, 581,996,953.44 and 129,252,425.76

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Solution

The fourth proportional to 388,127,440.80, 581,996,953.44 and 129,252,425.76 is: 193,813,964.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,127,440.80 : 581,996,953.44 = 129,252,425.76 : x
  2. Step 2: Convert to fraction form
    388,127,440.80/581,996,953.44 = 129,252,425.76/x
  3. Step 3: Cross multiply
    388,127,440.80x = 581,996,953.44 × 129,252,425.76
  4. Step 4: Simplify right side
    388,127,440.80x = 75,224,518,017,049,792
  5. Step 5: Solve for x
    x = 75,224,518,017,049,792/388,127,440.80
  6. Step 6: Final answer
    x = 193,813,964.46

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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.