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Finding the Fourth Proportional to 674,256.16, 930,500.40 and 387,776.08

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Solution

The fourth proportional to 674,256.16, 930,500.40 and 387,776.08 is: 535,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,256.16 : 930,500.40 = 387,776.08 : x
  2. Step 2: Convert to fraction form
    674,256.16/930,500.40 = 387,776.08/x
  3. Step 3: Cross multiply
    674,256.16x = 930,500.40 × 387,776.08
  4. Step 4: Simplify right side
    674,256.16x = 360,825,797,550.43
  5. Step 5: Solve for x
    x = 360,825,797,550.43/674,256.16
  6. Step 6: Final answer
    x = 535,146.46

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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.