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Finding the Fourth Proportional to 623,525.37, 860,697.62 and 485,430.67

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Solution

The fourth proportional to 623,525.37, 860,697.62 and 485,430.67 is: 670,075.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,525.37 : 860,697.62 = 485,430.67 : x
  2. Step 2: Convert to fraction form
    623,525.37/860,697.62 = 485,430.67/x
  3. Step 3: Cross multiply
    623,525.37x = 860,697.62 × 485,430.67
  4. Step 4: Simplify right side
    623,525.37x = 417,809,015,613.36
  5. Step 5: Solve for x
    x = 417,809,015,613.36/623,525.37
  6. Step 6: Final answer
    x = 670,075.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.