Home / 710,518.40-1,065,388.80-289,318.40

Finding the Fourth Proportional to 710,518.40, 1,065,388.80 and 289,318.40

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Solution

The fourth proportional to 710,518.40, 1,065,388.80 and 289,318.40 is: 433,819.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,518.40 : 1,065,388.80 = 289,318.40 : x
  2. Step 2: Convert to fraction form
    710,518.40/1,065,388.80 = 289,318.40/x
  3. Step 3: Cross multiply
    710,518.40x = 1,065,388.80 × 289,318.40
  4. Step 4: Simplify right side
    710,518.40x = 308,236,582,993.92
  5. Step 5: Solve for x
    x = 308,236,582,993.92/710,518.40
  6. Step 6: Final answer
    x = 433,819.28

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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.