Home / 513,541,426.88-708,627,381-287,492,788.64

Finding the Fourth Proportional to 513,541,426.88, 708,627,381 and 287,492,788.64

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Solution

The fourth proportional to 513,541,426.88, 708,627,381 and 287,492,788.64 is: 396,706,577.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,541,426.88 : 708,627,381 = 287,492,788.64 : x
  2. Step 2: Convert to fraction form
    513,541,426.88/708,627,381 = 287,492,788.64/x
  3. Step 3: Cross multiply
    513,541,426.88x = 708,627,381 × 287,492,788.64
  4. Step 4: Simplify right side
    513,541,426.88x = 203,725,261,870,349,728
  5. Step 5: Solve for x
    x = 203,725,261,870,349,728/513,541,426.88
  6. Step 6: Final answer
    x = 396,706,577.52

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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.