Home / 628,678.08-943,017.90-155,356.20

Finding the Fourth Proportional to 628,678.08, 943,017.90 and 155,356.20

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Solution

The fourth proportional to 628,678.08, 943,017.90 and 155,356.20 is: 233,034.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,678.08 : 943,017.90 = 155,356.20 : x
  2. Step 2: Convert to fraction form
    628,678.08/943,017.90 = 155,356.20/x
  3. Step 3: Cross multiply
    628,678.08x = 943,017.90 × 155,356.20
  4. Step 4: Simplify right side
    628,678.08x = 146,503,677,475.98
  5. Step 5: Solve for x
    x = 146,503,677,475.98/628,678.08
  6. Step 6: Final answer
    x = 233,034.49

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Half scale
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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.