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Finding the Fourth Proportional to 583,805.40, 875,643.30 and 478,440.60

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Solution

The fourth proportional to 583,805.40, 875,643.30 and 478,440.60 is: 717,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,805.40 : 875,643.30 = 478,440.60 : x
  2. Step 2: Convert to fraction form
    583,805.40/875,643.30 = 478,440.60/x
  3. Step 3: Cross multiply
    583,805.40x = 875,643.30 × 478,440.60
  4. Step 4: Simplify right side
    583,805.40x = 418,943,305,837.98
  5. Step 5: Solve for x
    x = 418,943,305,837.98/583,805.40
  6. Step 6: Final answer
    x = 717,607.80

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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.