Home / 885,731.12-1,328,807.60-286,692.40

Finding the Fourth Proportional to 885,731.12, 1,328,807.60 and 286,692.40

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Solution

The fourth proportional to 885,731.12, 1,328,807.60 and 286,692.40 is: 430,106.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,731.12 : 1,328,807.60 = 286,692.40 : x
  2. Step 2: Convert to fraction form
    885,731.12/1,328,807.60 = 286,692.40/x
  3. Step 3: Cross multiply
    885,731.12x = 1,328,807.60 × 286,692.40
  4. Step 4: Simplify right side
    885,731.12x = 380,959,039,982.24
  5. Step 5: Solve for x
    x = 380,959,039,982.24/885,731.12
  6. Step 6: Final answer
    x = 430,106.87

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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.