Home / 1,387,430.40-2,080,756.80-441,091.20

Finding the Fourth Proportional to 1,387,430.40, 2,080,756.80 and 441,091.20

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Solution

The fourth proportional to 1,387,430.40, 2,080,756.80 and 441,091.20 is: 661,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,430.40 : 2,080,756.80 = 441,091.20 : x
  2. Step 2: Convert to fraction form
    1,387,430.40/2,080,756.80 = 441,091.20/x
  3. Step 3: Cross multiply
    1,387,430.40x = 2,080,756.80 × 441,091.20
  4. Step 4: Simplify right side
    1,387,430.40x = 917,803,513,820.16
  5. Step 5: Solve for x
    x = 917,803,513,820.16/1,387,430.40
  6. Step 6: Final answer
    x = 661,513.19

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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.