Home / 743,135.40-1,114,703.10-519,186.60

Finding the Fourth Proportional to 743,135.40, 1,114,703.10 and 519,186.60

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Solution

The fourth proportional to 743,135.40, 1,114,703.10 and 519,186.60 is: 778,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,135.40 : 1,114,703.10 = 519,186.60 : x
  2. Step 2: Convert to fraction form
    743,135.40/1,114,703.10 = 519,186.60/x
  3. Step 3: Cross multiply
    743,135.40x = 1,114,703.10 × 519,186.60
  4. Step 4: Simplify right side
    743,135.40x = 578,738,912,498.46
  5. Step 5: Solve for x
    x = 578,738,912,498.46/743,135.40
  6. Step 6: Final answer
    x = 778,779.90

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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.