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Finding the Fourth Proportional to 569,870.07, 782,302.59 and 489,157.47

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Solution

The fourth proportional to 569,870.07, 782,302.59 and 489,157.47 is: 671,502.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,870.07 : 782,302.59 = 489,157.47 : x
  2. Step 2: Convert to fraction form
    569,870.07/782,302.59 = 489,157.47/x
  3. Step 3: Cross multiply
    569,870.07x = 782,302.59 × 489,157.47
  4. Step 4: Simplify right side
    569,870.07x = 382,669,155,698.85
  5. Step 5: Solve for x
    x = 382,669,155,698.85/569,870.07
  6. Step 6: Final answer
    x = 671,502.46

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.