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Finding the Fourth Proportional to 570,542.45, 787,373.18 and 315,893.63

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Solution

The fourth proportional to 570,542.45, 787,373.18 and 315,893.63 is: 435,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,542.45 : 787,373.18 = 315,893.63 : x
  2. Step 2: Convert to fraction form
    570,542.45/787,373.18 = 315,893.63/x
  3. Step 3: Cross multiply
    570,542.45x = 787,373.18 × 315,893.63
  4. Step 4: Simplify right side
    570,542.45x = 248,726,171,994.84
  5. Step 5: Solve for x
    x = 248,726,171,994.84/570,542.45
  6. Step 6: Final answer
    x = 435,946.83

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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.