Home / 1,387,378.56-2,081,068.56-390,106.56

Finding the Fourth Proportional to 1,387,378.56, 2,081,068.56 and 390,106.56

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Solution

The fourth proportional to 1,387,378.56, 2,081,068.56 and 390,106.56 is: 585,160.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,378.56 : 2,081,068.56 = 390,106.56 : x
  2. Step 2: Convert to fraction form
    1,387,378.56/2,081,068.56 = 390,106.56/x
  3. Step 3: Cross multiply
    1,387,378.56x = 2,081,068.56 × 390,106.56
  4. Step 4: Simplify right side
    1,387,378.56x = 811,838,497,065.75
  5. Step 5: Solve for x
    x = 811,838,497,065.75/1,387,378.56
  6. Step 6: Final answer
    x = 585,160.04

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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.