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Finding the Fourth Proportional to 710,819.60, 1,066,812.60 and 687,491.60

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Solution

The fourth proportional to 710,819.60, 1,066,812.60 and 687,491.60 is: 1,031,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,819.60 : 1,066,812.60 = 687,491.60 : x
  2. Step 2: Convert to fraction form
    710,819.60/1,066,812.60 = 687,491.60/x
  3. Step 3: Cross multiply
    710,819.60x = 1,066,812.60 × 687,491.60
  4. Step 4: Simplify right side
    710,819.60x = 733,424,701,274.16
  5. Step 5: Solve for x
    x = 733,424,701,274.16/710,819.60
  6. Step 6: Final answer
    x = 1,031,801.46

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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.