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Finding the Fourth Proportional to 570,559.56, 787,381.86 and 312,432.36

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Solution

The fourth proportional to 570,559.56, 787,381.86 and 312,432.36 is: 431,161.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,559.56 : 787,381.86 = 312,432.36 : x
  2. Step 2: Convert to fraction form
    570,559.56/787,381.86 = 312,432.36/x
  3. Step 3: Cross multiply
    570,559.56x = 787,381.86 × 312,432.36
  4. Step 4: Simplify right side
    570,559.56x = 246,003,572,740.99
  5. Step 5: Solve for x
    x = 246,003,572,740.99/570,559.56
  6. Step 6: Final answer
    x = 431,161.95

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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.