Home / 780,172.36-1,076,558.34-440,574.76

Finding the Fourth Proportional to 780,172.36, 1,076,558.34 and 440,574.76

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Solution

The fourth proportional to 780,172.36, 1,076,558.34 and 440,574.76 is: 607,948.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,172.36 : 1,076,558.34 = 440,574.76 : x
  2. Step 2: Convert to fraction form
    780,172.36/1,076,558.34 = 440,574.76/x
  3. Step 3: Cross multiply
    780,172.36x = 1,076,558.34 × 440,574.76
  4. Step 4: Simplify right side
    780,172.36x = 474,304,432,271.50
  5. Step 5: Solve for x
    x = 474,304,432,271.50/780,172.36
  6. Step 6: Final answer
    x = 607,948.26

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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.