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Finding the Fourth Proportional to 530,492.22, 732,078.81 and 288,774.45

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Solution

The fourth proportional to 530,492.22, 732,078.81 and 288,774.45 is: 398,508.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,492.22 : 732,078.81 = 288,774.45 : x
  2. Step 2: Convert to fraction form
    530,492.22/732,078.81 = 288,774.45/x
  3. Step 3: Cross multiply
    530,492.22x = 732,078.81 × 288,774.45
  4. Step 4: Simplify right side
    530,492.22x = 211,405,655,714.41
  5. Step 5: Solve for x
    x = 211,405,655,714.41/530,492.22
  6. Step 6: Final answer
    x = 398,508.49

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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.