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Finding the Fourth Proportional to 530,447.80, 732,037.28 and 288,718.69

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Solution

The fourth proportional to 530,447.80, 732,037.28 and 288,718.69 is: 398,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,447.80 : 732,037.28 = 288,718.69 : x
  2. Step 2: Convert to fraction form
    530,447.80/732,037.28 = 288,718.69/x
  3. Step 3: Cross multiply
    530,447.80x = 732,037.28 × 288,718.69
  4. Step 4: Simplify right side
    530,447.80x = 211,352,844,512.76
  5. Step 5: Solve for x
    x = 211,352,844,512.76/530,447.80
  6. Step 6: Final answer
    x = 398,442.31

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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.