Home / 520,624,373.13-780,525,660.74-258,127,935.57

Finding the Fourth Proportional to 520,624,373.13, 780,525,660.74 and 258,127,935.57

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Solution

The fourth proportional to 520,624,373.13, 780,525,660.74 and 258,127,935.57 is: 386,988,177.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,624,373.13 : 780,525,660.74 = 258,127,935.57 : x
  2. Step 2: Convert to fraction form
    520,624,373.13/780,525,660.74 = 258,127,935.57/x
  3. Step 3: Cross multiply
    520,624,373.13x = 780,525,660.74 × 258,127,935.57
  4. Step 4: Simplify right side
    520,624,373.13x = 201,475,477,464,935,744
  5. Step 5: Solve for x
    x = 201,475,477,464,935,744/520,624,373.13
  6. Step 6: Final answer
    x = 386,988,177.78

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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.