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Finding the Fourth Proportional to 637,931.28, 879,133.86 and 456,327.81

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Solution

The fourth proportional to 637,931.28, 879,133.86 and 456,327.81 is: 628,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,931.28 : 879,133.86 = 456,327.81 : x
  2. Step 2: Convert to fraction form
    637,931.28/879,133.86 = 456,327.81/x
  3. Step 3: Cross multiply
    637,931.28x = 879,133.86 × 456,327.81
  4. Step 4: Simplify right side
    637,931.28x = 401,173,229,030.65
  5. Step 5: Solve for x
    x = 401,173,229,030.65/637,931.28
  6. Step 6: Final answer
    x = 628,865.90

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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.