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Finding the Fourth Proportional to 679,984.72, 938,373.72 and 374,054.52

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Solution

The fourth proportional to 679,984.72, 938,373.72 and 374,054.52 is: 516,192.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,984.72 : 938,373.72 = 374,054.52 : x
  2. Step 2: Convert to fraction form
    679,984.72/938,373.72 = 374,054.52/x
  3. Step 3: Cross multiply
    679,984.72x = 938,373.72 × 374,054.52
  4. Step 4: Simplify right side
    679,984.72x = 351,002,931,415.21
  5. Step 5: Solve for x
    x = 351,002,931,415.21/679,984.72
  6. Step 6: Final answer
    x = 516,192.38

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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.