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Finding the Fourth Proportional to 425,471.05, 587,300.43 and 380,070.19

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Solution

The fourth proportional to 425,471.05, 587,300.43 and 380,070.19 is: 524,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,471.05 : 587,300.43 = 380,070.19 : x
  2. Step 2: Convert to fraction form
    425,471.05/587,300.43 = 380,070.19/x
  3. Step 3: Cross multiply
    425,471.05x = 587,300.43 × 380,070.19
  4. Step 4: Simplify right side
    425,471.05x = 223,215,386,017.18
  5. Step 5: Solve for x
    x = 223,215,386,017.18/425,471.05
  6. Step 6: Final answer
    x = 524,631.20

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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.