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Finding the Fourth Proportional to 655,528.06, 904,417.50 and 397,508.50

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Solution

The fourth proportional to 655,528.06, 904,417.50 and 397,508.50 is: 548,433.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,528.06 : 904,417.50 = 397,508.50 : x
  2. Step 2: Convert to fraction form
    655,528.06/904,417.50 = 397,508.50/x
  3. Step 3: Cross multiply
    655,528.06x = 904,417.50 × 397,508.50
  4. Step 4: Simplify right side
    655,528.06x = 359,513,643,798.75
  5. Step 5: Solve for x
    x = 359,513,643,798.75/655,528.06
  6. Step 6: Final answer
    x = 548,433.65

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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.