Home / 909,078.90-1,254,537-501,195.20

Finding the Fourth Proportional to 909,078.90, 1,254,537 and 501,195.20

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Solution

The fourth proportional to 909,078.90, 1,254,537 and 501,195.20 is: 691,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,078.90 : 1,254,537 = 501,195.20 : x
  2. Step 2: Convert to fraction form
    909,078.90/1,254,537 = 501,195.20/x
  3. Step 3: Cross multiply
    909,078.90x = 1,254,537 × 501,195.20
  4. Step 4: Simplify right side
    909,078.90x = 628,767,922,622.40
  5. Step 5: Solve for x
    x = 628,767,922,622.40/909,078.90
  6. Step 6: Final answer
    x = 691,653.85

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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.