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Finding the Fourth Proportional to 679,332.93, 937,528.43 and 407,395.88

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Solution

The fourth proportional to 679,332.93, 937,528.43 and 407,395.88 is: 562,235.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,332.93 : 937,528.43 = 407,395.88 : x
  2. Step 2: Convert to fraction form
    679,332.93/937,528.43 = 407,395.88/x
  3. Step 3: Cross multiply
    679,332.93x = 937,528.43 × 407,395.88
  4. Step 4: Simplify right side
    679,332.93x = 381,945,216,555.98
  5. Step 5: Solve for x
    x = 381,945,216,555.98/679,332.93
  6. Step 6: Final answer
    x = 562,235.69

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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.