Home / 710,815.20-1,065,704.40-289,874.40

Finding the Fourth Proportional to 710,815.20, 1,065,704.40 and 289,874.40

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Solution

The fourth proportional to 710,815.20, 1,065,704.40 and 289,874.40 is: 434,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,815.20 : 1,065,704.40 = 289,874.40 : x
  2. Step 2: Convert to fraction form
    710,815.20/1,065,704.40 = 289,874.40/x
  3. Step 3: Cross multiply
    710,815.20x = 1,065,704.40 × 289,874.40
  4. Step 4: Simplify right side
    710,815.20x = 308,920,423,527.36
  5. Step 5: Solve for x
    x = 308,920,423,527.36/710,815.20
  6. Step 6: Final answer
    x = 434,600.19

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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.