Home / 1,209,749.40-1,814,624.10-411,931.80

Finding the Fourth Proportional to 1,209,749.40, 1,814,624.10 and 411,931.80

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Solution

The fourth proportional to 1,209,749.40, 1,814,624.10 and 411,931.80 is: 617,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,749.40 : 1,814,624.10 = 411,931.80 : x
  2. Step 2: Convert to fraction form
    1,209,749.40/1,814,624.10 = 411,931.80/x
  3. Step 3: Cross multiply
    1,209,749.40x = 1,814,624.10 × 411,931.80
  4. Step 4: Simplify right side
    1,209,749.40x = 747,501,371,836.38
  5. Step 5: Solve for x
    x = 747,501,371,836.38/1,209,749.40
  6. Step 6: Final answer
    x = 617,897.70

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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.