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Finding the Fourth Proportional to 528,431.58, 724,751.82 and 506,730.90

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Solution

The fourth proportional to 528,431.58, 724,751.82 and 506,730.90 is: 694,989.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,431.58 : 724,751.82 = 506,730.90 : x
  2. Step 2: Convert to fraction form
    528,431.58/724,751.82 = 506,730.90/x
  3. Step 3: Cross multiply
    528,431.58x = 724,751.82 × 506,730.90
  4. Step 4: Simplify right side
    528,431.58x = 367,254,142,025.24
  5. Step 5: Solve for x
    x = 367,254,142,025.24/528,431.58
  6. Step 6: Final answer
    x = 694,989.01

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.