Home / 972,315.40-1,458,035.70-439,562.20

Finding the Fourth Proportional to 972,315.40, 1,458,035.70 and 439,562.20

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Solution

The fourth proportional to 972,315.40, 1,458,035.70 and 439,562.20 is: 659,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,315.40 : 1,458,035.70 = 439,562.20 : x
  2. Step 2: Convert to fraction form
    972,315.40/1,458,035.70 = 439,562.20/x
  3. Step 3: Cross multiply
    972,315.40x = 1,458,035.70 × 439,562.20
  4. Step 4: Simplify right side
    972,315.40x = 640,897,379,970.54
  5. Step 5: Solve for x
    x = 640,897,379,970.54/972,315.40
  6. Step 6: Final answer
    x = 659,145.56

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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.