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Finding the Fourth Proportional to 603,686.40, 904,492.80 and 287,462.40

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Solution

The fourth proportional to 603,686.40, 904,492.80 and 287,462.40 is: 430,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,686.40 : 904,492.80 = 287,462.40 : x
  2. Step 2: Convert to fraction form
    603,686.40/904,492.80 = 287,462.40/x
  3. Step 3: Cross multiply
    603,686.40x = 904,492.80 × 287,462.40
  4. Step 4: Simplify right side
    603,686.40x = 260,007,671,070.72
  5. Step 5: Solve for x
    x = 260,007,671,070.72/603,686.40
  6. Step 6: Final answer
    x = 430,699.90

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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.