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Finding the Fourth Proportional to 530,447.43, 732,036.77 and 288,718.32

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Solution

The fourth proportional to 530,447.43, 732,036.77 and 288,718.32 is: 398,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,447.43 : 732,036.77 = 288,718.32 : x
  2. Step 2: Convert to fraction form
    530,447.43/732,036.77 = 288,718.32/x
  3. Step 3: Cross multiply
    530,447.43x = 732,036.77 × 288,718.32
  4. Step 4: Simplify right side
    530,447.43x = 211,352,426,412.63
  5. Step 5: Solve for x
    x = 211,352,426,412.63/530,447.43
  6. Step 6: Final answer
    x = 398,441.80

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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.