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Finding the Fourth Proportional to 607,528.80, 910,564.20 and 417,988.80

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Solution

The fourth proportional to 607,528.80, 910,564.20 and 417,988.80 is: 626,481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,528.80 : 910,564.20 = 417,988.80 : x
  2. Step 2: Convert to fraction form
    607,528.80/910,564.20 = 417,988.80/x
  3. Step 3: Cross multiply
    607,528.80x = 910,564.20 × 417,988.80
  4. Step 4: Simplify right side
    607,528.80x = 380,605,637,280.96
  5. Step 5: Solve for x
    x = 380,605,637,280.96/607,528.80
  6. Step 6: Final answer
    x = 626,481.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.