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Finding the Fourth Proportional to 716,860.54, 989,044.86 and 406,711.81

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Solution

The fourth proportional to 716,860.54, 989,044.86 and 406,711.81 is: 561,135.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,860.54 : 989,044.86 = 406,711.81 : x
  2. Step 2: Convert to fraction form
    716,860.54/989,044.86 = 406,711.81/x
  3. Step 3: Cross multiply
    716,860.54x = 989,044.86 × 406,711.81
  4. Step 4: Simplify right side
    716,860.54x = 402,256,225,181.80
  5. Step 5: Solve for x
    x = 402,256,225,181.80/716,860.54
  6. Step 6: Final answer
    x = 561,135.96

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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.