Home / 909,363.72-1,255,035.07-522,300.36

Finding the Fourth Proportional to 909,363.72, 1,255,035.07 and 522,300.36

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Solution

The fourth proportional to 909,363.72, 1,255,035.07 and 522,300.36 is: 720,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,363.72 : 1,255,035.07 = 522,300.36 : x
  2. Step 2: Convert to fraction form
    909,363.72/1,255,035.07 = 522,300.36/x
  3. Step 3: Cross multiply
    909,363.72x = 1,255,035.07 × 522,300.36
  4. Step 4: Simplify right side
    909,363.72x = 655,505,261,292.70
  5. Step 5: Solve for x
    x = 655,505,261,292.70/909,363.72
  6. Step 6: Final answer
    x = 720,839.47

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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.