Home / 1,208,412.20-1,812,560.70-409,615.40

Finding the Fourth Proportional to 1,208,412.20, 1,812,560.70 and 409,615.40

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Solution

The fourth proportional to 1,208,412.20, 1,812,560.70 and 409,615.40 is: 614,403.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,412.20 : 1,812,560.70 = 409,615.40 : x
  2. Step 2: Convert to fraction form
    1,208,412.20/1,812,560.70 = 409,615.40/x
  3. Step 3: Cross multiply
    1,208,412.20x = 1,812,560.70 × 409,615.40
  4. Step 4: Simplify right side
    1,208,412.20x = 742,452,776,154.78
  5. Step 5: Solve for x
    x = 742,452,776,154.78/1,208,412.20
  6. Step 6: Final answer
    x = 614,403.58

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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.