Home / 688,628.70-1,032,943.05-239,200.20

Finding the Fourth Proportional to 688,628.70, 1,032,943.05 and 239,200.20

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Solution

The fourth proportional to 688,628.70, 1,032,943.05 and 239,200.20 is: 358,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,628.70 : 1,032,943.05 = 239,200.20 : x
  2. Step 2: Convert to fraction form
    688,628.70/1,032,943.05 = 239,200.20/x
  3. Step 3: Cross multiply
    688,628.70x = 1,032,943.05 × 239,200.20
  4. Step 4: Simplify right side
    688,628.70x = 247,080,184,148.61
  5. Step 5: Solve for x
    x = 247,080,184,148.61/688,628.70
  6. Step 6: Final answer
    x = 358,800.30

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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.