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Finding the Fourth Proportional to 772,501, 1,065,816.64 and 486,306.76

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Solution

The fourth proportional to 772,501, 1,065,816.64 and 486,306.76 is: 670,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,501 : 1,065,816.64 = 486,306.76 : x
  2. Step 2: Convert to fraction form
    772,501/1,065,816.64 = 486,306.76/x
  3. Step 3: Cross multiply
    772,501x = 1,065,816.64 × 486,306.76
  4. Step 4: Simplify right side
    772,501x = 518,313,836,952.49
  5. Step 5: Solve for x
    x = 518,313,836,952.49/772,501
  6. Step 6: Final answer
    x = 670,955.55

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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.