Home / 426,480,611.36-639,720,916.80-103,364,483.36

Finding the Fourth Proportional to 426,480,611.36, 639,720,916.80 and 103,364,483.36

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Solution

The fourth proportional to 426,480,611.36, 639,720,916.80 and 103,364,483.36 is: 155,046,724.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,480,611.36 : 639,720,916.80 = 103,364,483.36 : x
  2. Step 2: Convert to fraction form
    426,480,611.36/639,720,916.80 = 103,364,483.36/x
  3. Step 3: Cross multiply
    426,480,611.36x = 639,720,916.80 × 103,364,483.36
  4. Step 4: Simplify right side
    426,480,611.36x = 66,124,422,059,617,536
  5. Step 5: Solve for x
    x = 66,124,422,059,617,536/426,480,611.36
  6. Step 6: Final answer
    x = 155,046,724.98

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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.