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Finding the Fourth Proportional to 528,071.10, 789,802.65 and 472,314.30

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Solution

The fourth proportional to 528,071.10, 789,802.65 and 472,314.30 is: 706,410.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,071.10 : 789,802.65 = 472,314.30 : x
  2. Step 2: Convert to fraction form
    528,071.10/789,802.65 = 472,314.30/x
  3. Step 3: Cross multiply
    528,071.10x = 789,802.65 × 472,314.30
  4. Step 4: Simplify right side
    528,071.10x = 373,035,085,772.90
  5. Step 5: Solve for x
    x = 373,035,085,772.90/528,071.10
  6. Step 6: Final answer
    x = 706,410.72

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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.