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Finding the Fourth Proportional to 570,905.15, 787,897.13 and 316,280.03

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Solution

The fourth proportional to 570,905.15, 787,897.13 and 316,280.03 is: 436,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,905.15 : 787,897.13 = 316,280.03 : x
  2. Step 2: Convert to fraction form
    570,905.15/787,897.13 = 316,280.03/x
  3. Step 3: Cross multiply
    570,905.15x = 787,897.13 × 316,280.03
  4. Step 4: Simplify right side
    570,905.15x = 249,196,122,392.43
  5. Step 5: Solve for x
    x = 249,196,122,392.43/570,905.15
  6. Step 6: Final answer
    x = 436,493.04

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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.