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Finding the Fourth Proportional to 528,909.64, 729,792.66 and 314,117.08

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Solution

The fourth proportional to 528,909.64, 729,792.66 and 314,117.08 is: 433,420.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,909.64 : 729,792.66 = 314,117.08 : x
  2. Step 2: Convert to fraction form
    528,909.64/729,792.66 = 314,117.08/x
  3. Step 3: Cross multiply
    528,909.64x = 729,792.66 × 314,117.08
  4. Step 4: Simplify right side
    528,909.64x = 229,240,339,364.63
  5. Step 5: Solve for x
    x = 229,240,339,364.63/528,909.64
  6. Step 6: Final answer
    x = 433,420.61

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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.