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Finding the Fourth Proportional to 535,903.18, 803,104.17 and 402,698.50

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Solution

The fourth proportional to 535,903.18, 803,104.17 and 402,698.50 is: 603,483.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,903.18 : 803,104.17 = 402,698.50 : x
  2. Step 2: Convert to fraction form
    535,903.18/803,104.17 = 402,698.50/x
  3. Step 3: Cross multiply
    535,903.18x = 803,104.17 × 402,698.50
  4. Step 4: Simplify right side
    535,903.18x = 323,408,844,602.75
  5. Step 5: Solve for x
    x = 323,408,844,602.75/535,903.18
  6. Step 6: Final answer
    x = 603,483.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.