Home / 717,720.18-1,076,605.65-380,305.14

Finding the Fourth Proportional to 717,720.18, 1,076,605.65 and 380,305.14

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Solution

The fourth proportional to 717,720.18, 1,076,605.65 and 380,305.14 is: 570,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,720.18 : 1,076,605.65 = 380,305.14 : x
  2. Step 2: Convert to fraction form
    717,720.18/1,076,605.65 = 380,305.14/x
  3. Step 3: Cross multiply
    717,720.18x = 1,076,605.65 × 380,305.14
  4. Step 4: Simplify right side
    717,720.18x = 409,438,662,448.04
  5. Step 5: Solve for x
    x = 409,438,662,448.04/717,720.18
  6. Step 6: Final answer
    x = 570,471.16

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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.