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Finding the Fourth Proportional to 634,068.64, 875,180.10 and 392,210.56

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Solution

The fourth proportional to 634,068.64, 875,180.10 and 392,210.56 is: 541,352.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,068.64 : 875,180.10 = 392,210.56 : x
  2. Step 2: Convert to fraction form
    634,068.64/875,180.10 = 392,210.56/x
  3. Step 3: Cross multiply
    634,068.64x = 875,180.10 × 392,210.56
  4. Step 4: Simplify right side
    634,068.64x = 343,254,877,121.86
  5. Step 5: Solve for x
    x = 343,254,877,121.86/634,068.64
  6. Step 6: Final answer
    x = 541,352.87

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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.