Home / 669,075.18-923,337.46-378,686.73

Finding the Fourth Proportional to 669,075.18, 923,337.46 and 378,686.73

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Solution

The fourth proportional to 669,075.18, 923,337.46 and 378,686.73 is: 522,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,075.18 : 923,337.46 = 378,686.73 : x
  2. Step 2: Convert to fraction form
    669,075.18/923,337.46 = 378,686.73/x
  3. Step 3: Cross multiply
    669,075.18x = 923,337.46 × 378,686.73
  4. Step 4: Simplify right side
    669,075.18x = 349,655,644,775.53
  5. Step 5: Solve for x
    x = 349,655,644,775.53/669,075.18
  6. Step 6: Final answer
    x = 522,595.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.