Home / 760,137.80-1,139,937.90-261,385.80

Finding the Fourth Proportional to 760,137.80, 1,139,937.90 and 261,385.80

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Solution

The fourth proportional to 760,137.80, 1,139,937.90 and 261,385.80 is: 391,986.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,137.80 : 1,139,937.90 = 261,385.80 : x
  2. Step 2: Convert to fraction form
    760,137.80/1,139,937.90 = 261,385.80/x
  3. Step 3: Cross multiply
    760,137.80x = 1,139,937.90 × 261,385.80
  4. Step 4: Simplify right side
    760,137.80x = 297,963,579,941.82
  5. Step 5: Solve for x
    x = 297,963,579,941.82/760,137.80
  6. Step 6: Final answer
    x = 391,986.27

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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.