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Finding the Fourth Proportional to 660,849.20, 990,582.60 and 360,868.40

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Solution

The fourth proportional to 660,849.20, 990,582.60 and 360,868.40 is: 540,925.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,849.20 : 990,582.60 = 360,868.40 : x
  2. Step 2: Convert to fraction form
    660,849.20/990,582.60 = 360,868.40/x
  3. Step 3: Cross multiply
    660,849.20x = 990,582.60 × 360,868.40
  4. Step 4: Simplify right side
    660,849.20x = 357,469,957,929.84
  5. Step 5: Solve for x
    x = 357,469,957,929.84/660,849.20
  6. Step 6: Final answer
    x = 540,925.16

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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.