Home / 487,828.65-731,742.95-321,577.77

Finding the Fourth Proportional to 487,828.65, 731,742.95 and 321,577.77

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Solution

The fourth proportional to 487,828.65, 731,742.95 and 321,577.77 is: 482,366.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,828.65 : 731,742.95 = 321,577.77 : x
  2. Step 2: Convert to fraction form
    487,828.65/731,742.95 = 321,577.77/x
  3. Step 3: Cross multiply
    487,828.65x = 731,742.95 × 321,577.77
  4. Step 4: Simplify right side
    487,828.65x = 235,312,266,074.22
  5. Step 5: Solve for x
    x = 235,312,266,074.22/487,828.65
  6. Step 6: Final answer
    x = 482,366.64

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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.