Home / 753,631.80-1,128,698.10-515,686.20

Finding the Fourth Proportional to 753,631.80, 1,128,698.10 and 515,686.20

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Solution

The fourth proportional to 753,631.80, 1,128,698.10 and 515,686.20 is: 772,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,631.80 : 1,128,698.10 = 515,686.20 : x
  2. Step 2: Convert to fraction form
    753,631.80/1,128,698.10 = 515,686.20/x
  3. Step 3: Cross multiply
    753,631.80x = 1,128,698.10 × 515,686.20
  4. Step 4: Simplify right side
    753,631.80x = 582,054,034,136.22
  5. Step 5: Solve for x
    x = 582,054,034,136.22/753,631.80
  6. Step 6: Final answer
    x = 772,332.10

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Double scale
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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.