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Finding the Fourth Proportional to 638,574.37, 956,777.62 and 385,322.74

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Solution

The fourth proportional to 638,574.37, 956,777.62 and 385,322.74 is: 577,330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,574.37 : 956,777.62 = 385,322.74 : x
  2. Step 2: Convert to fraction form
    638,574.37/956,777.62 = 385,322.74/x
  3. Step 3: Cross multiply
    638,574.37x = 956,777.62 × 385,322.74
  4. Step 4: Simplify right side
    638,574.37x = 368,668,173,145.77
  5. Step 5: Solve for x
    x = 368,668,173,145.77/638,574.37
  6. Step 6: Final answer
    x = 577,330.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.