Home / 1,208,417.20-1,812,568.20-409,620.40

Finding the Fourth Proportional to 1,208,417.20, 1,812,568.20 and 409,620.40

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Solution

The fourth proportional to 1,208,417.20, 1,812,568.20 and 409,620.40 is: 614,411.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,417.20 : 1,812,568.20 = 409,620.40 : x
  2. Step 2: Convert to fraction form
    1,208,417.20/1,812,568.20 = 409,620.40/x
  3. Step 3: Cross multiply
    1,208,417.20x = 1,812,568.20 × 409,620.40
  4. Step 4: Simplify right side
    1,208,417.20x = 742,464,911,111.28
  5. Step 5: Solve for x
    x = 742,464,911,111.28/1,208,417.20
  6. Step 6: Final answer
    x = 614,411.08

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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.