Home / 753,404.20-1,130,106.30-434,539.60

Finding the Fourth Proportional to 753,404.20, 1,130,106.30 and 434,539.60

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Solution

The fourth proportional to 753,404.20, 1,130,106.30 and 434,539.60 is: 651,809.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,404.20 : 1,130,106.30 = 434,539.60 : x
  2. Step 2: Convert to fraction form
    753,404.20/1,130,106.30 = 434,539.60/x
  3. Step 3: Cross multiply
    753,404.20x = 1,130,106.30 × 434,539.60
  4. Step 4: Simplify right side
    753,404.20x = 491,075,939,559.48
  5. Step 5: Solve for x
    x = 491,075,939,559.48/753,404.20
  6. Step 6: Final answer
    x = 651,809.40

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Double scale
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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.