Home / 1,213,905.40-1,820,420.70-614,667.40

Finding the Fourth Proportional to 1,213,905.40, 1,820,420.70 and 614,667.40

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Solution

The fourth proportional to 1,213,905.40, 1,820,420.70 and 614,667.40 is: 921,779.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,905.40 : 1,820,420.70 = 614,667.40 : x
  2. Step 2: Convert to fraction form
    1,213,905.40/1,820,420.70 = 614,667.40/x
  3. Step 3: Cross multiply
    1,213,905.40x = 1,820,420.70 × 614,667.40
  4. Step 4: Simplify right side
    1,213,905.40x = 1,118,953,258,575.18
  5. Step 5: Solve for x
    x = 1,118,953,258,575.18/1,213,905.40
  6. Step 6: Final answer
    x = 921,779.62

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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.