Home / 640,709,429.36-884,213,343.20-358,435,031.25

Finding the Fourth Proportional to 640,709,429.36, 884,213,343.20 and 358,435,031.25

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Solution

The fourth proportional to 640,709,429.36, 884,213,343.20 and 358,435,031.25 is: 494,659,548.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,709,429.36 : 884,213,343.20 = 358,435,031.25 : x
  2. Step 2: Convert to fraction form
    640,709,429.36/884,213,343.20 = 358,435,031.25/x
  3. Step 3: Cross multiply
    640,709,429.36x = 884,213,343.20 × 358,435,031.25
  4. Step 4: Simplify right side
    640,709,429.36x = 316,933,037,299,766,848
  5. Step 5: Solve for x
    x = 316,933,037,299,766,848/640,709,429.36
  6. Step 6: Final answer
    x = 494,659,548.89

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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.