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Finding the Fourth Proportional to 528,590.89, 729,455.79 and 286,873.39

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Solution

The fourth proportional to 528,590.89, 729,455.79 and 286,873.39 is: 395,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,590.89 : 729,455.79 = 286,873.39 : x
  2. Step 2: Convert to fraction form
    528,590.89/729,455.79 = 286,873.39/x
  3. Step 3: Cross multiply
    528,590.89x = 729,455.79 × 286,873.39
  4. Step 4: Simplify right side
    528,590.89x = 209,261,455,332.43
  5. Step 5: Solve for x
    x = 209,261,455,332.43/528,590.89
  6. Step 6: Final answer
    x = 395,885.47

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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.