Home / 669,666.30-1,004,499.45-389,730.30

Finding the Fourth Proportional to 669,666.30, 1,004,499.45 and 389,730.30

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Solution

The fourth proportional to 669,666.30, 1,004,499.45 and 389,730.30 is: 584,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,666.30 : 1,004,499.45 = 389,730.30 : x
  2. Step 2: Convert to fraction form
    669,666.30/1,004,499.45 = 389,730.30/x
  3. Step 3: Cross multiply
    669,666.30x = 1,004,499.45 × 389,730.30
  4. Step 4: Simplify right side
    669,666.30x = 391,483,871,998.34
  5. Step 5: Solve for x
    x = 391,483,871,998.34/669,666.30
  6. Step 6: Final answer
    x = 584,595.45

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