Home / 688,633.70-1,032,950.55-239,205.20

Finding the Fourth Proportional to 688,633.70, 1,032,950.55 and 239,205.20

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Solution

The fourth proportional to 688,633.70, 1,032,950.55 and 239,205.20 is: 358,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,633.70 : 1,032,950.55 = 239,205.20 : x
  2. Step 2: Convert to fraction form
    688,633.70/1,032,950.55 = 239,205.20/x
  3. Step 3: Cross multiply
    688,633.70x = 1,032,950.55 × 239,205.20
  4. Step 4: Simplify right side
    688,633.70x = 247,087,142,902.86
  5. Step 5: Solve for x
    x = 247,087,142,902.86/688,633.70
  6. Step 6: Final answer
    x = 358,807.80

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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.