Home / 714,228.10-985,631.85-391,943.57

Finding the Fourth Proportional to 714,228.10, 985,631.85 and 391,943.57

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Solution

The fourth proportional to 714,228.10, 985,631.85 and 391,943.57 is: 540,880.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,228.10 : 985,631.85 = 391,943.57 : x
  2. Step 2: Convert to fraction form
    714,228.10/985,631.85 = 391,943.57/x
  3. Step 3: Cross multiply
    714,228.10x = 985,631.85 × 391,943.57
  4. Step 4: Simplify right side
    714,228.10x = 386,312,061,066.55
  5. Step 5: Solve for x
    x = 386,312,061,066.55/714,228.10
  6. Step 6: Final answer
    x = 540,880.51

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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.