Home / 515,664.02-711,602.69-286,220.66

Finding the Fourth Proportional to 515,664.02, 711,602.69 and 286,220.66

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Solution

The fourth proportional to 515,664.02, 711,602.69 and 286,220.66 is: 394,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,664.02 : 711,602.69 = 286,220.66 : x
  2. Step 2: Convert to fraction form
    515,664.02/711,602.69 = 286,220.66/x
  3. Step 3: Cross multiply
    515,664.02x = 711,602.69 × 286,220.66
  4. Step 4: Simplify right side
    515,664.02x = 203,675,386,600.46
  5. Step 5: Solve for x
    x = 203,675,386,600.46/515,664.02
  6. Step 6: Final answer
    x = 394,976.92

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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.