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Finding the Fourth Proportional to 484,727.36, 668,750.64 and 280,666.91

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Solution

The fourth proportional to 484,727.36, 668,750.64 and 280,666.91 is: 387,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,727.36 : 668,750.64 = 280,666.91 : x
  2. Step 2: Convert to fraction form
    484,727.36/668,750.64 = 280,666.91/x
  3. Step 3: Cross multiply
    484,727.36x = 668,750.64 × 280,666.91
  4. Step 4: Simplify right side
    484,727.36x = 187,696,175,689.32
  5. Step 5: Solve for x
    x = 187,696,175,689.32/484,727.36
  6. Step 6: Final answer
    x = 387,220.10

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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.