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Finding the Fourth Proportional to 528,642.66, 729,527.52 and 286,925.22

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Solution

The fourth proportional to 528,642.66, 729,527.52 and 286,925.22 is: 395,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,642.66 : 729,527.52 = 286,925.22 : x
  2. Step 2: Convert to fraction form
    528,642.66/729,527.52 = 286,925.22/x
  3. Step 3: Cross multiply
    528,642.66x = 729,527.52 × 286,925.22
  4. Step 4: Simplify right side
    528,642.66x = 209,319,844,172.05
  5. Step 5: Solve for x
    x = 209,319,844,172.05/528,642.66
  6. Step 6: Final answer
    x = 395,957.16

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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.