Home / 760,143.80-1,139,946.90-261,391.80

Finding the Fourth Proportional to 760,143.80, 1,139,946.90 and 261,391.80

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Solution

The fourth proportional to 760,143.80, 1,139,946.90 and 261,391.80 is: 391,995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,143.80 : 1,139,946.90 = 261,391.80 : x
  2. Step 2: Convert to fraction form
    760,143.80/1,139,946.90 = 261,391.80/x
  3. Step 3: Cross multiply
    760,143.80x = 1,139,946.90 × 261,391.80
  4. Step 4: Simplify right side
    760,143.80x = 297,972,772,095.42
  5. Step 5: Solve for x
    x = 297,972,772,095.42/760,143.80
  6. Step 6: Final answer
    x = 391,995.27

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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.