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Finding the Fourth Proportional to 528,590.70, 729,455.67 and 286,873.32

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Solution

The fourth proportional to 528,590.70, 729,455.67 and 286,873.32 is: 395,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,590.70 : 729,455.67 = 286,873.32 : x
  2. Step 2: Convert to fraction form
    528,590.70/729,455.67 = 286,873.32/x
  3. Step 3: Cross multiply
    528,590.70x = 729,455.67 × 286,873.32
  4. Step 4: Simplify right side
    528,590.70x = 209,261,369,845.72
  5. Step 5: Solve for x
    x = 209,261,369,845.72/528,590.70
  6. Step 6: Final answer
    x = 395,885.46

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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.