Home / 1,087,239.40-1,630,859.10-288,644.20

Finding the Fourth Proportional to 1,087,239.40, 1,630,859.10 and 288,644.20

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Solution

The fourth proportional to 1,087,239.40, 1,630,859.10 and 288,644.20 is: 432,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,239.40 : 1,630,859.10 = 288,644.20 : x
  2. Step 2: Convert to fraction form
    1,087,239.40/1,630,859.10 = 288,644.20/x
  3. Step 3: Cross multiply
    1,087,239.40x = 1,630,859.10 × 288,644.20
  4. Step 4: Simplify right side
    1,087,239.40x = 470,738,020,232.22
  5. Step 5: Solve for x
    x = 470,738,020,232.22/1,087,239.40
  6. Step 6: Final answer
    x = 432,966.30

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Half scale
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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.