Home / 915,638.76-1,263,519.84-507,725.60

Finding the Fourth Proportional to 915,638.76, 1,263,519.84 and 507,725.60

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Solution

The fourth proportional to 915,638.76, 1,263,519.84 and 507,725.60 is: 700,627.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,638.76 : 1,263,519.84 = 507,725.60 : x
  2. Step 2: Convert to fraction form
    915,638.76/1,263,519.84 = 507,725.60/x
  3. Step 3: Cross multiply
    915,638.76x = 1,263,519.84 × 507,725.60
  4. Step 4: Simplify right side
    915,638.76x = 641,521,368,875.90
  5. Step 5: Solve for x
    x = 641,521,368,875.90/915,638.76
  6. Step 6: Final answer
    x = 700,627.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.