Home / 712,811,631.45-983,662,493.76-395,270,122.71

Finding the Fourth Proportional to 712,811,631.45, 983,662,493.76 and 395,270,122.71

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Solution

The fourth proportional to 712,811,631.45, 983,662,493.76 and 395,270,122.71 is: 545,463,033.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,811,631.45 : 983,662,493.76 = 395,270,122.71 : x
  2. Step 2: Convert to fraction form
    712,811,631.45/983,662,493.76 = 395,270,122.71/x
  3. Step 3: Cross multiply
    712,811,631.45x = 983,662,493.76 × 395,270,122.71
  4. Step 4: Simplify right side
    712,811,631.45x = 388,812,394,613,739,776
  5. Step 5: Solve for x
    x = 388,812,394,613,739,776/712,811,631.45
  6. Step 6: Final answer
    x = 545,463,033.23

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1.5x scale

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.