Home / 521,369,319.20-719,409,678.80-301,310,247.20

Finding the Fourth Proportional to 521,369,319.20, 719,409,678.80 and 301,310,247.20

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Solution

The fourth proportional to 521,369,319.20, 719,409,678.80 and 301,310,247.20 is: 415,761,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,369,319.20 : 719,409,678.80 = 301,310,247.20 : x
  2. Step 2: Convert to fraction form
    521,369,319.20/719,409,678.80 = 301,310,247.20/x
  3. Step 3: Cross multiply
    521,369,319.20x = 719,409,678.80 × 301,310,247.20
  4. Step 4: Simplify right side
    521,369,319.20x = 216,765,508,157,300,576
  5. Step 5: Solve for x
    x = 216,765,508,157,300,576/521,369,319.20
  6. Step 6: Final answer
    x = 415,761,918.04

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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.