Home / 521,457,617.70-782,280,904.95-262,019,931.30

Finding the Fourth Proportional to 521,457,617.70, 782,280,904.95 and 262,019,931.30

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Solution

The fourth proportional to 521,457,617.70, 782,280,904.95 and 262,019,931.30 is: 393,077,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,457,617.70 : 782,280,904.95 = 262,019,931.30 : x
  2. Step 2: Convert to fraction form
    521,457,617.70/782,280,904.95 = 262,019,931.30/x
  3. Step 3: Cross multiply
    521,457,617.70x = 782,280,904.95 × 262,019,931.30
  4. Step 4: Simplify right side
    521,457,617.70x = 204,973,188,972,300,864
  5. Step 5: Solve for x
    x = 204,973,188,972,300,864/521,457,617.70
  6. Step 6: Final answer
    x = 393,077,370.08

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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.