Home / 507,261,865.20-700,021,476.48-309,023,300.16

Finding the Fourth Proportional to 507,261,865.20, 700,021,476.48 and 309,023,300.16

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Solution

The fourth proportional to 507,261,865.20, 700,021,476.48 and 309,023,300.16 is: 426,452,216.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,261,865.20 : 700,021,476.48 = 309,023,300.16 : x
  2. Step 2: Convert to fraction form
    507,261,865.20/700,021,476.48 = 309,023,300.16/x
  3. Step 3: Cross multiply
    507,261,865.20x = 700,021,476.48 × 309,023,300.16
  4. Step 4: Simplify right side
    507,261,865.20x = 216,322,946,844,725,440
  5. Step 5: Solve for x
    x = 216,322,946,844,725,440/507,261,865.20
  6. Step 6: Final answer
    x = 426,452,216.67

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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.