Home / 763,421.40-1,145,132.10-264,785.40

Finding the Fourth Proportional to 763,421.40, 1,145,132.10 and 264,785.40

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Solution

The fourth proportional to 763,421.40, 1,145,132.10 and 264,785.40 is: 397,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,421.40 : 1,145,132.10 = 264,785.40 : x
  2. Step 2: Convert to fraction form
    763,421.40/1,145,132.10 = 264,785.40/x
  3. Step 3: Cross multiply
    763,421.40x = 1,145,132.10 × 264,785.40
  4. Step 4: Simplify right side
    763,421.40x = 303,214,261,151.34
  5. Step 5: Solve for x
    x = 303,214,261,151.34/763,421.40
  6. Step 6: Final answer
    x = 397,178.10

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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.