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Finding the Fourth Proportional to 679,964.63, 938,368.69 and 374,048.87

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Solution

The fourth proportional to 679,964.63, 938,368.69 and 374,048.87 is: 516,197.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,964.63 : 938,368.69 = 374,048.87 : x
  2. Step 2: Convert to fraction form
    679,964.63/938,368.69 = 374,048.87/x
  3. Step 3: Cross multiply
    679,964.63x = 938,368.69 × 374,048.87
  4. Step 4: Simplify right side
    679,964.63x = 350,995,748,137.88
  5. Step 5: Solve for x
    x = 350,995,748,137.88/679,964.63
  6. Step 6: Final answer
    x = 516,197.07

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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.