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Finding the Fourth Proportional to 543,607.60, 813,798.60 and 403,985.20

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Solution

The fourth proportional to 543,607.60, 813,798.60 and 403,985.20 is: 604,779.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,607.60 : 813,798.60 = 403,985.20 : x
  2. Step 2: Convert to fraction form
    543,607.60/813,798.60 = 403,985.20/x
  3. Step 3: Cross multiply
    543,607.60x = 813,798.60 × 403,985.20
  4. Step 4: Simplify right side
    543,607.60x = 328,762,590,180.72
  5. Step 5: Solve for x
    x = 328,762,590,180.72/543,607.60
  6. Step 6: Final answer
    x = 604,779.24

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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.