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Finding the Fourth Proportional to 716,756.22, 989,103.69 and 406,715.27

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Solution

The fourth proportional to 716,756.22, 989,103.69 and 406,715.27 is: 561,255.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,756.22 : 989,103.69 = 406,715.27 : x
  2. Step 2: Convert to fraction form
    716,756.22/989,103.69 = 406,715.27/x
  3. Step 3: Cross multiply
    716,756.22x = 989,103.69 × 406,715.27
  4. Step 4: Simplify right side
    716,756.22x = 402,283,569,390.83
  5. Step 5: Solve for x
    x = 402,283,569,390.83/716,756.22
  6. Step 6: Final answer
    x = 561,255.78

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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.