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Finding the Fourth Proportional to 570,627.66, 787,465.68 and 315,978.84

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Solution

The fourth proportional to 570,627.66, 787,465.68 and 315,978.84 is: 436,050.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,627.66 : 787,465.68 = 315,978.84 : x
  2. Step 2: Convert to fraction form
    570,627.66/787,465.68 = 315,978.84/x
  3. Step 3: Cross multiply
    570,627.66x = 787,465.68 × 315,978.84
  4. Step 4: Simplify right side
    570,627.66x = 248,822,492,106.21
  5. Step 5: Solve for x
    x = 248,822,492,106.21/570,627.66
  6. Step 6: Final answer
    x = 436,050.53

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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.