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Finding the Fourth Proportional to 700,499.95, 966,762.74 and 428,748.80

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Solution

The fourth proportional to 700,499.95, 966,762.74 and 428,748.80 is: 591,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,499.95 : 966,762.74 = 428,748.80 : x
  2. Step 2: Convert to fraction form
    700,499.95/966,762.74 = 428,748.80/x
  3. Step 3: Cross multiply
    700,499.95x = 966,762.74 × 428,748.80
  4. Step 4: Simplify right side
    700,499.95x = 414,498,360,897.77
  5. Step 5: Solve for x
    x = 414,498,360,897.77/700,499.95
  6. Step 6: Final answer
    x = 591,717.90

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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.