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Finding the Fourth Proportional to 672,319.40, 927,800.78 and 370,513.40

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Solution

The fourth proportional to 672,319.40, 927,800.78 and 370,513.40 is: 511,308.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,319.40 : 927,800.78 = 370,513.40 : x
  2. Step 2: Convert to fraction form
    672,319.40/927,800.78 = 370,513.40/x
  3. Step 3: Cross multiply
    672,319.40x = 927,800.78 × 370,513.40
  4. Step 4: Simplify right side
    672,319.40x = 343,762,615,028.88
  5. Step 5: Solve for x
    x = 343,762,615,028.88/672,319.40
  6. Step 6: Final answer
    x = 511,308.49

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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.