Home / 738,128.70-1,104,568.65-512,430.30

Finding the Fourth Proportional to 738,128.70, 1,104,568.65 and 512,430.30

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Solution

The fourth proportional to 738,128.70, 1,104,568.65 and 512,430.30 is: 766,823.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,128.70 : 1,104,568.65 = 512,430.30 : x
  2. Step 2: Convert to fraction form
    738,128.70/1,104,568.65 = 512,430.30/x
  3. Step 3: Cross multiply
    738,128.70x = 1,104,568.65 × 512,430.30
  4. Step 4: Simplify right side
    738,128.70x = 566,014,444,690.10
  5. Step 5: Solve for x
    x = 566,014,444,690.10/738,128.70
  6. Step 6: Final answer
    x = 766,823.52

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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.