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Finding the Fourth Proportional to 529,808.80, 731,208.72 and 402,282.40

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Solution

The fourth proportional to 529,808.80, 731,208.72 and 402,282.40 is: 555,204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,808.80 : 731,208.72 = 402,282.40 : x
  2. Step 2: Convert to fraction form
    529,808.80/731,208.72 = 402,282.40/x
  3. Step 3: Cross multiply
    529,808.80x = 731,208.72 × 402,282.40
  4. Step 4: Simplify right side
    529,808.80x = 294,152,398,782.53
  5. Step 5: Solve for x
    x = 294,152,398,782.53/529,808.80
  6. Step 6: Final answer
    x = 555,204.82

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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.