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Finding the Fourth Proportional to 570,539.23, 787,353.03 and 312,411.87

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Solution

The fourth proportional to 570,539.23, 787,353.03 and 312,411.87 is: 431,133.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,539.23 : 787,353.03 = 312,411.87 : x
  2. Step 2: Convert to fraction form
    570,539.23/787,353.03 = 312,411.87/x
  3. Step 3: Cross multiply
    570,539.23x = 787,353.03 × 312,411.87
  4. Step 4: Simplify right side
    570,539.23x = 245,978,432,452.47
  5. Step 5: Solve for x
    x = 245,978,432,452.47/570,539.23
  6. Step 6: Final answer
    x = 431,133.25

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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.