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Finding the Fourth Proportional to 528,657.59, 729,527.91 and 286,934.98

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Solution

The fourth proportional to 528,657.59, 729,527.91 and 286,934.98 is: 395,959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,657.59 : 729,527.91 = 286,934.98 : x
  2. Step 2: Convert to fraction form
    528,657.59/729,527.91 = 286,934.98/x
  3. Step 3: Cross multiply
    528,657.59x = 729,527.91 × 286,934.98
  4. Step 4: Simplify right side
    528,657.59x = 209,327,074,733.33
  5. Step 5: Solve for x
    x = 209,327,074,733.33/528,657.59
  6. Step 6: Final answer
    x = 395,959.65

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1.5x scale

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.