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Finding the Fourth Proportional to 704,803.42, 972,628.32 and 398,874.25

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Solution

The fourth proportional to 704,803.42, 972,628.32 and 398,874.25 is: 550,446.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,803.42 : 972,628.32 = 398,874.25 : x
  2. Step 2: Convert to fraction form
    704,803.42/972,628.32 = 398,874.25/x
  3. Step 3: Cross multiply
    704,803.42x = 972,628.32 × 398,874.25
  4. Step 4: Simplify right side
    704,803.42x = 387,956,391,668.76
  5. Step 5: Solve for x
    x = 387,956,391,668.76/704,803.42
  6. Step 6: Final answer
    x = 550,446.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.