Home / 553,913.40-830,870.10-198,982.20

Finding the Fourth Proportional to 553,913.40, 830,870.10 and 198,982.20

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Solution

The fourth proportional to 553,913.40, 830,870.10 and 198,982.20 is: 298,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,913.40 : 830,870.10 = 198,982.20 : x
  2. Step 2: Convert to fraction form
    553,913.40/830,870.10 = 198,982.20/x
  3. Step 3: Cross multiply
    553,913.40x = 830,870.10 × 198,982.20
  4. Step 4: Simplify right side
    553,913.40x = 165,328,360,412.22
  5. Step 5: Solve for x
    x = 165,328,360,412.22/553,913.40
  6. Step 6: Final answer
    x = 298,473.30

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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.