Home / 819,975.60-1,229,963.40-288,097.20

Finding the Fourth Proportional to 819,975.60, 1,229,963.40 and 288,097.20

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Solution

The fourth proportional to 819,975.60, 1,229,963.40 and 288,097.20 is: 432,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,975.60 : 1,229,963.40 = 288,097.20 : x
  2. Step 2: Convert to fraction form
    819,975.60/1,229,963.40 = 288,097.20/x
  3. Step 3: Cross multiply
    819,975.60x = 1,229,963.40 × 288,097.20
  4. Step 4: Simplify right side
    819,975.60x = 354,349,011,642.48
  5. Step 5: Solve for x
    x = 354,349,011,642.48/819,975.60
  6. Step 6: Final answer
    x = 432,145.80

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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.