Home / 739,378.60-1,108,193.10-312,913.60

Finding the Fourth Proportional to 739,378.60, 1,108,193.10 and 312,913.60

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Solution

The fourth proportional to 739,378.60, 1,108,193.10 and 312,913.60 is: 469,000.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,378.60 : 1,108,193.10 = 312,913.60 : x
  2. Step 2: Convert to fraction form
    739,378.60/1,108,193.10 = 312,913.60/x
  3. Step 3: Cross multiply
    739,378.60x = 1,108,193.10 × 312,913.60
  4. Step 4: Simplify right side
    739,378.60x = 346,768,692,416.16
  5. Step 5: Solve for x
    x = 346,768,692,416.16/739,378.60
  6. Step 6: Final answer
    x = 469,000.17

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Double scale
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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.