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Finding the Fourth Proportional to 688,391.55, 950,001.48 and 416,509.38

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Solution

The fourth proportional to 688,391.55, 950,001.48 and 416,509.38 is: 574,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,391.55 : 950,001.48 = 416,509.38 : x
  2. Step 2: Convert to fraction form
    688,391.55/950,001.48 = 416,509.38/x
  3. Step 3: Cross multiply
    688,391.55x = 950,001.48 × 416,509.38
  4. Step 4: Simplify right side
    688,391.55x = 395,684,527,433.88
  5. Step 5: Solve for x
    x = 395,684,527,433.88/688,391.55
  6. Step 6: Final answer
    x = 574,795.74

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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.