Home / 920,011.53-1,269,657.74-512,139.22

Finding the Fourth Proportional to 920,011.53, 1,269,657.74 and 512,139.22

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Solution

The fourth proportional to 920,011.53, 1,269,657.74 and 512,139.22 is: 706,775.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,011.53 : 1,269,657.74 = 512,139.22 : x
  2. Step 2: Convert to fraction form
    920,011.53/1,269,657.74 = 512,139.22/x
  3. Step 3: Cross multiply
    920,011.53x = 1,269,657.74 × 512,139.22
  4. Step 4: Simplify right side
    920,011.53x = 650,241,518,282.27
  5. Step 5: Solve for x
    x = 650,241,518,282.27/920,011.53
  6. Step 6: Final answer
    x = 706,775.40

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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.