Home / 872,718.30-1,309,065.71-340,613.10

Finding the Fourth Proportional to 872,718.30, 1,309,065.71 and 340,613.10

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Solution

The fourth proportional to 872,718.30, 1,309,065.71 and 340,613.10 is: 510,915.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,718.30 : 1,309,065.71 = 340,613.10 : x
  2. Step 2: Convert to fraction form
    872,718.30/1,309,065.71 = 340,613.10/x
  3. Step 3: Cross multiply
    872,718.30x = 1,309,065.71 × 340,613.10
  4. Step 4: Simplify right side
    872,718.30x = 445,884,927,883.74
  5. Step 5: Solve for x
    x = 445,884,927,883.74/872,718.30
  6. Step 6: Final answer
    x = 510,915.07

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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.