Home / 631,178,876.34-871,028,031.96-352,720,400.58

Finding the Fourth Proportional to 631,178,876.34, 871,028,031.96 and 352,720,400.58

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Solution

The fourth proportional to 631,178,876.34, 871,028,031.96 and 352,720,400.58 is: 486,754,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,178,876.34 : 871,028,031.96 = 352,720,400.58 : x
  2. Step 2: Convert to fraction form
    631,178,876.34/871,028,031.96 = 352,720,400.58/x
  3. Step 3: Cross multiply
    631,178,876.34x = 871,028,031.96 × 352,720,400.58
  4. Step 4: Simplify right side
    631,178,876.34x = 307,229,356,349,340,224
  5. Step 5: Solve for x
    x = 307,229,356,349,340,224/631,178,876.34
  6. Step 6: Final answer
    x = 486,754,813.68

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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.