Home / 426,366.07-638,826.47-257,531.68

Finding the Fourth Proportional to 426,366.07, 638,826.47 and 257,531.68

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Solution

The fourth proportional to 426,366.07, 638,826.47 and 257,531.68 is: 385,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,366.07 : 638,826.47 = 257,531.68 : x
  2. Step 2: Convert to fraction form
    426,366.07/638,826.47 = 257,531.68/x
  3. Step 3: Cross multiply
    426,366.07x = 638,826.47 × 257,531.68
  4. Step 4: Simplify right side
    426,366.07x = 164,518,053,953.16
  5. Step 5: Solve for x
    x = 164,518,053,953.16/426,366.07
  6. Step 6: Final answer
    x = 385,861.03

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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.