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Finding the Fourth Proportional to 819,376.40, 1,229,064.60 and 502,806.80

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Solution

The fourth proportional to 819,376.40, 1,229,064.60 and 502,806.80 is: 754,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,376.40 : 1,229,064.60 = 502,806.80 : x
  2. Step 2: Convert to fraction form
    819,376.40/1,229,064.60 = 502,806.80/x
  3. Step 3: Cross multiply
    819,376.40x = 1,229,064.60 × 502,806.80
  4. Step 4: Simplify right side
    819,376.40x = 617,982,038,519.28
  5. Step 5: Solve for x
    x = 617,982,038,519.28/819,376.40
  6. Step 6: Final answer
    x = 754,210.20

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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.