Home / 1,389,698.20-2,084,547.30-392,426.20

Finding the Fourth Proportional to 1,389,698.20, 2,084,547.30 and 392,426.20

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Solution

The fourth proportional to 1,389,698.20, 2,084,547.30 and 392,426.20 is: 588,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,698.20 : 2,084,547.30 = 392,426.20 : x
  2. Step 2: Convert to fraction form
    1,389,698.20/2,084,547.30 = 392,426.20/x
  3. Step 3: Cross multiply
    1,389,698.20x = 2,084,547.30 × 392,426.20
  4. Step 4: Simplify right side
    1,389,698.20x = 818,030,975,659.26
  5. Step 5: Solve for x
    x = 818,030,975,659.26/1,389,698.20
  6. Step 6: Final answer
    x = 588,639.30

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Double scale
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Similar ratio
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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.