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Finding the Fourth Proportional to 679,900.71, 938,243.39 and 373,977.07

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Solution

The fourth proportional to 679,900.71, 938,243.39 and 373,977.07 is: 516,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,900.71 : 938,243.39 = 373,977.07 : x
  2. Step 2: Convert to fraction form
    679,900.71/938,243.39 = 373,977.07/x
  3. Step 3: Cross multiply
    679,900.71x = 938,243.39 × 373,977.07
  4. Step 4: Simplify right side
    679,900.71x = 350,881,513,939.07
  5. Step 5: Solve for x
    x = 350,881,513,939.07/679,900.71
  6. Step 6: Final answer
    x = 516,077.58

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1.5x scale

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.