Home / 1,130,143.80-1,695,215.70-288,695.55

Finding the Fourth Proportional to 1,130,143.80, 1,695,215.70 and 288,695.55

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Solution

The fourth proportional to 1,130,143.80, 1,695,215.70 and 288,695.55 is: 433,043.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,143.80 : 1,695,215.70 = 288,695.55 : x
  2. Step 2: Convert to fraction form
    1,130,143.80/1,695,215.70 = 288,695.55/x
  3. Step 3: Cross multiply
    1,130,143.80x = 1,695,215.70 × 288,695.55
  4. Step 4: Simplify right side
    1,130,143.80x = 489,401,228,880.14
  5. Step 5: Solve for x
    x = 489,401,228,880.14/1,130,143.80
  6. Step 6: Final answer
    x = 433,043.33

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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.