Home / 714,302.20-985,767.78-427,767.40

Finding the Fourth Proportional to 714,302.20, 985,767.78 and 427,767.40

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Solution

The fourth proportional to 714,302.20, 985,767.78 and 427,767.40 is: 590,337.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,302.20 : 985,767.78 = 427,767.40 : x
  2. Step 2: Convert to fraction form
    714,302.20/985,767.78 = 427,767.40/x
  3. Step 3: Cross multiply
    714,302.20x = 985,767.78 × 427,767.40
  4. Step 4: Simplify right side
    714,302.20x = 421,679,320,254.37
  5. Step 5: Solve for x
    x = 421,679,320,254.37/714,302.20
  6. Step 6: Final answer
    x = 590,337.42

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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.