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Finding the Fourth Proportional to 634,401.32, 875,485.86 and 347,904.20

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Solution

The fourth proportional to 634,401.32, 875,485.86 and 347,904.20 is: 480,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,401.32 : 875,485.86 = 347,904.20 : x
  2. Step 2: Convert to fraction form
    634,401.32/875,485.86 = 347,904.20/x
  3. Step 3: Cross multiply
    634,401.32x = 875,485.86 × 347,904.20
  4. Step 4: Simplify right side
    634,401.32x = 304,585,207,734.61
  5. Step 5: Solve for x
    x = 304,585,207,734.61/634,401.32
  6. Step 6: Final answer
    x = 480,114.40

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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.