Home / 487,495-731,244.84-127,665.16

Finding the Fourth Proportional to 487,495, 731,244.84 and 127,665.16

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Solution

The fourth proportional to 487,495, 731,244.84 and 127,665.16 is: 191,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,495 : 731,244.84 = 127,665.16 : x
  2. Step 2: Convert to fraction form
    487,495/731,244.84 = 127,665.16/x
  3. Step 3: Cross multiply
    487,495x = 731,244.84 × 127,665.16
  4. Step 4: Simplify right side
    487,495x = 93,354,489,497.77
  5. Step 5: Solve for x
    x = 93,354,489,497.77/487,495
  6. Step 6: Final answer
    x = 191,498.35

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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.