Home / 912,000.40-1,368,000.60-280,832.20

Finding the Fourth Proportional to 912,000.40, 1,368,000.60 and 280,832.20

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Solution

The fourth proportional to 912,000.40, 1,368,000.60 and 280,832.20 is: 421,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,000.40 : 1,368,000.60 = 280,832.20 : x
  2. Step 2: Convert to fraction form
    912,000.40/1,368,000.60 = 280,832.20/x
  3. Step 3: Cross multiply
    912,000.40x = 1,368,000.60 × 280,832.20
  4. Step 4: Simplify right side
    912,000.40x = 384,178,618,099.32
  5. Step 5: Solve for x
    x = 384,178,618,099.32/912,000.40
  6. Step 6: Final answer
    x = 421,248.30

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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.