Home / 839,043.20-1,157,424.72-499,445.84

Finding the Fourth Proportional to 839,043.20, 1,157,424.72 and 499,445.84

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Solution

The fourth proportional to 839,043.20, 1,157,424.72 and 499,445.84 is: 688,964.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,043.20 : 1,157,424.72 = 499,445.84 : x
  2. Step 2: Convert to fraction form
    839,043.20/1,157,424.72 = 499,445.84/x
  3. Step 3: Cross multiply
    839,043.20x = 1,157,424.72 × 499,445.84
  4. Step 4: Simplify right side
    839,043.20x = 578,070,961,517.17
  5. Step 5: Solve for x
    x = 578,070,961,517.17/839,043.20
  6. Step 6: Final answer
    x = 688,964.48

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Double scale
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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.