Home / 484,118.18-668,036.34-280,128.50

Finding the Fourth Proportional to 484,118.18, 668,036.34 and 280,128.50

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Solution

The fourth proportional to 484,118.18, 668,036.34 and 280,128.50 is: 386,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,118.18 : 668,036.34 = 280,128.50 : x
  2. Step 2: Convert to fraction form
    484,118.18/668,036.34 = 280,128.50/x
  3. Step 3: Cross multiply
    484,118.18x = 668,036.34 × 280,128.50
  4. Step 4: Simplify right side
    484,118.18x = 187,136,014,529.51
  5. Step 5: Solve for x
    x = 187,136,014,529.51/484,118.18
  6. Step 6: Final answer
    x = 386,550.28

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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.