Home / 638,851.20-958,276.80-579,802.20

Finding the Fourth Proportional to 638,851.20, 958,276.80 and 579,802.20

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Solution

The fourth proportional to 638,851.20, 958,276.80 and 579,802.20 is: 869,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,851.20 : 958,276.80 = 579,802.20 : x
  2. Step 2: Convert to fraction form
    638,851.20/958,276.80 = 579,802.20/x
  3. Step 3: Cross multiply
    638,851.20x = 958,276.80 × 579,802.20
  4. Step 4: Simplify right side
    638,851.20x = 555,610,996,848.96
  5. Step 5: Solve for x
    x = 555,610,996,848.96/638,851.20
  6. Step 6: Final answer
    x = 869,703.30

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Double scale
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Similar ratio
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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.