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Finding the Fourth Proportional to 519,075.60, 778,613.40 and 494,581.20

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Solution

The fourth proportional to 519,075.60, 778,613.40 and 494,581.20 is: 741,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,075.60 : 778,613.40 = 494,581.20 : x
  2. Step 2: Convert to fraction form
    519,075.60/778,613.40 = 494,581.20/x
  3. Step 3: Cross multiply
    519,075.60x = 778,613.40 × 494,581.20
  4. Step 4: Simplify right side
    519,075.60x = 385,087,549,708.08
  5. Step 5: Solve for x
    x = 385,087,549,708.08/519,075.60
  6. Step 6: Final answer
    x = 741,871.80

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Similar ratio
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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.