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Finding the Fourth Proportional to 570,893.34, 787,798.95 and 312,718.68

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Solution

The fourth proportional to 570,893.34, 787,798.95 and 312,718.68 is: 431,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,893.34 : 787,798.95 = 312,718.68 : x
  2. Step 2: Convert to fraction form
    570,893.34/787,798.95 = 312,718.68/x
  3. Step 3: Cross multiply
    570,893.34x = 787,798.95 × 312,718.68
  4. Step 4: Simplify right side
    570,893.34x = 246,359,447,749.39
  5. Step 5: Solve for x
    x = 246,359,447,749.39/570,893.34
  6. Step 6: Final answer
    x = 431,533.23

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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.