Home / 780,348.78-1,076,968.74-440,838.90

Finding the Fourth Proportional to 780,348.78, 1,076,968.74 and 440,838.90

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Solution

The fourth proportional to 780,348.78, 1,076,968.74 and 440,838.90 is: 608,407.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,348.78 : 1,076,968.74 = 440,838.90 : x
  2. Step 2: Convert to fraction form
    780,348.78/1,076,968.74 = 440,838.90/x
  3. Step 3: Cross multiply
    780,348.78x = 1,076,968.74 × 440,838.90
  4. Step 4: Simplify right side
    780,348.78x = 474,769,714,675.99
  5. Step 5: Solve for x
    x = 474,769,714,675.99/780,348.78
  6. Step 6: Final answer
    x = 608,407.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.