Home / 673,007.40-1,009,511.10-389,572.20

Finding the Fourth Proportional to 673,007.40, 1,009,511.10 and 389,572.20

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Solution

The fourth proportional to 673,007.40, 1,009,511.10 and 389,572.20 is: 584,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,007.40 : 1,009,511.10 = 389,572.20 : x
  2. Step 2: Convert to fraction form
    673,007.40/1,009,511.10 = 389,572.20/x
  3. Step 3: Cross multiply
    673,007.40x = 1,009,511.10 × 389,572.20
  4. Step 4: Simplify right side
    673,007.40x = 393,277,460,151.42
  5. Step 5: Solve for x
    x = 393,277,460,151.42/673,007.40
  6. Step 6: Final answer
    x = 584,358.30

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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.