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Finding the Fourth Proportional to 674,056, 930,189.52 and 387,577.20

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Solution

The fourth proportional to 674,056, 930,189.52 and 387,577.20 is: 534,852.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,056 : 930,189.52 = 387,577.20 : x
  2. Step 2: Convert to fraction form
    674,056/930,189.52 = 387,577.20/x
  3. Step 3: Cross multiply
    674,056x = 930,189.52 × 387,577.20
  4. Step 4: Simplify right side
    674,056x = 360,520,249,630.94
  5. Step 5: Solve for x
    x = 360,520,249,630.94/674,056
  6. Step 6: Final answer
    x = 534,852.07

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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.