Home / 711,409.20-1,065,731.40-395,300.40

Finding the Fourth Proportional to 711,409.20, 1,065,731.40 and 395,300.40

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Solution

The fourth proportional to 711,409.20, 1,065,731.40 and 395,300.40 is: 592,182.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,409.20 : 1,065,731.40 = 395,300.40 : x
  2. Step 2: Convert to fraction form
    711,409.20/1,065,731.40 = 395,300.40/x
  3. Step 3: Cross multiply
    711,409.20x = 1,065,731.40 × 395,300.40
  4. Step 4: Simplify right side
    711,409.20x = 421,284,048,712.56
  5. Step 5: Solve for x
    x = 421,284,048,712.56/711,409.20
  6. Step 6: Final answer
    x = 592,182.46

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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.