Home / 1,358,897.40-2,038,346.10-412,315.20

Finding the Fourth Proportional to 1,358,897.40, 2,038,346.10 and 412,315.20

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Solution

The fourth proportional to 1,358,897.40, 2,038,346.10 and 412,315.20 is: 618,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358,897.40 : 2,038,346.10 = 412,315.20 : x
  2. Step 2: Convert to fraction form
    1,358,897.40/2,038,346.10 = 412,315.20/x
  3. Step 3: Cross multiply
    1,358,897.40x = 2,038,346.10 × 412,315.20
  4. Step 4: Simplify right side
    1,358,897.40x = 840,441,079,890.72
  5. Step 5: Solve for x
    x = 840,441,079,890.72/1,358,897.40
  6. Step 6: Final answer
    x = 618,472.80

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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.