Home / 518,485,768.40-715,565,809.70-317,675,908.67

Finding the Fourth Proportional to 518,485,768.40, 715,565,809.70 and 317,675,908.67

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Solution

The fourth proportional to 518,485,768.40, 715,565,809.70 and 317,675,908.67 is: 438,426,727.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,485,768.40 : 715,565,809.70 = 317,675,908.67 : x
  2. Step 2: Convert to fraction form
    518,485,768.40/715,565,809.70 = 317,675,908.67/x
  3. Step 3: Cross multiply
    518,485,768.40x = 715,565,809.70 × 317,675,908.67
  4. Step 4: Simplify right side
    518,485,768.40x = 227,318,018,805,656,896
  5. Step 5: Solve for x
    x = 227,318,018,805,656,896/518,485,768.40
  6. Step 6: Final answer
    x = 438,426,727.71

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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.