Home / 688,074.72-949,565.26-382,154.78

Finding the Fourth Proportional to 688,074.72, 949,565.26 and 382,154.78

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Solution

The fourth proportional to 688,074.72, 949,565.26 and 382,154.78 is: 527,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,074.72 : 949,565.26 = 382,154.78 : x
  2. Step 2: Convert to fraction form
    688,074.72/949,565.26 = 382,154.78/x
  3. Step 3: Cross multiply
    688,074.72x = 949,565.26 × 382,154.78
  4. Step 4: Simplify right side
    688,074.72x = 362,880,903,030.94
  5. Step 5: Solve for x
    x = 362,880,903,030.94/688,074.72
  6. Step 6: Final answer
    x = 527,385.90

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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.