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Finding the Fourth Proportional to 416,862.30, 625,293.45 and 388,868.70

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Solution

The fourth proportional to 416,862.30, 625,293.45 and 388,868.70 is: 583,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,862.30 : 625,293.45 = 388,868.70 : x
  2. Step 2: Convert to fraction form
    416,862.30/625,293.45 = 388,868.70/x
  3. Step 3: Cross multiply
    416,862.30x = 625,293.45 × 388,868.70
  4. Step 4: Simplify right side
    416,862.30x = 243,157,051,020.02
  5. Step 5: Solve for x
    x = 243,157,051,020.02/416,862.30
  6. Step 6: Final answer
    x = 583,303.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.